Remember that not all attendees at a Mass are pilgrims, even though it might be a Pilgrim's Mass. Most of the attendees at any Pilgrim's Mass are tourists, there for the day, and for the spectacle of the Botafumeiro after the formal conclusion of the Mass, not necessarily the celebration of the Holy Mass.
In fact, the use of the Botafumeiro was moved to after the Mass, instead of before the Mass, as the presiding priest would lose control of the congregation as soon as the organ started to play. This detracted from the celebration of the Mass, so needs must, and some years ago, the Archbishop moved this tourist attraction to AFTER the Mass. The Botafumeiro ceremony starts ONLY after the priest gives the final blessing and announces... 'the Mass is ended....go in peace..."
We have a saying out on Camino... "Tourists demand...pilgrims are grateful..." That said, I suspect that some of the bad behavior COULD be from pilgrims. I cannot absolve them of all culpability. But, in my many attendances at Mass in the Cathedral, I lay most all the "blame" on the hordes of tourists who EXPECT to see the Botafumeiro and are miffed when their expectations are not met..loop back to first sentence of this paragraph...
To clarify as to when the Botafumeiro is used, the Church uses the Botafumeiro at its expense only for Catholic Holy Days, and several special saint feast days, or some key Catholic days, like Christmas and Easter, etc.
At all other times, it is flown by subscription or payment. A group or individual must pay the fee (make the requisite donation) to cover the costs attendant in using the Botafumeiro and preparing it for the next use. I recall that in 2017, the customary amount was about €400.
Note, the fellows handling the Botafumeiro and pulling the ropes have to be paid each time. They are not religious workers. They are lay persons from the community.
FYI, staff at the Pilgrim Office coordinate and schedule the non-Church covered aspects of this ceremony. Despite this, the schedule is never made public. Even those of us who work there have no idea about the schedule. The sole clue is when one or more of the staff quietly excuse themselves from processing pilgrims at about 12:15 each day. These fellows are in the crew who pull the ropes. When they leave, the rest of us know why. But this is very hit and miss.
Recently, I have started to see large groups, 50 or so, of people who apparently are from cruise liners. The cruise liners dock at Vigo, which has a deep water port capable of handling large ocean-going vessels. From there, coaches / buses convey hordes of these tourists to Santiago.
Two weeks ago, while I was at Santiago for six days following my annual Camino, I observed dozens of these groups, led by guides carrying "lollipop" signs (round signs looking like mutant table tennis paddles). Each sign had a the logo of the cruise line (like MSC, or similar) AND a number designating the group ID.
Each of the tourist members of that group wore a round, adhesive label on their chest with the same logo and group ID number. This alone suggested that each ship sends multiple groups (identified by group numbers) at a time.
We need to face up to the fact that this is a phenomenon that will not go away. The city of Santiago de Compostela, and the entire cult of Santiago is attractive to many people for many reasons. Our reason happens to be the Camino.
But, for others, including firms and cruise lines seeking to make profit from providing tourists an additional 'experience," Santiago de Compostela is sort of like a 'middle ages theme park.' Untouched by war damage and a center of pilgrimage for more than 1,200 years, it has everything that would attract tourists.
Unlike most of the rest of Europe, the primary "old town" is undisturbed by urban renewal. It's 800-year old (+) buildings and streets appear more or less as they always have. The old, arcaded streets maintain their charm with none of the overt commercialism that the rest of Europe is replete with. The 'new town" is conveniently organized to be distant and separate. There are few very old cities or large towns in the rest of Europe that can claim this status...and many of them are in Spain or Portugal.
And, in this context, the pilgrims, in their rucksacks and sometimes strange apparel are one of the prime attractions. We do not have to like this. But, we DO have to suck it up and just find a way to cope. We are, as pilgrims, exhibits in this zoo.
Personally, I know the streets and alleys well enough to navigate around the bulk of the tourism center surrounding the Cathedral. I know the schedules of Masses and opening hours of the places I visit, as well as alternative routes to get to and from most any point, WITHOUT passing through Plaza Obradoiro, in front of the Cathedral.
This is also a wise security measure as we approach the Feast of Santiago on 25 July. With the Plaza Obradoiro so packed with pilgrims and tourists at all times, I simply avoid the crowd gathering, taking quiet alternative routes to and from the Pilgrim Office. It is simply more tranquil and safer on many levels.
Just as an observation, the next Holy Year is 2021. Building to and coming off that seminal religious observation (when Santiago's feast day falls on a Sunday) the crowds will increase and then slowly settle into a new high, as more and more people see the wonders of the city we all love.
Hope this helps.