Your footwear is your most important piece of Camino equipment and it is a highly personal issue, dependent on the nature of your own, very unique, feet. As such, you should not make a footwear decision based on the opinions and experiences of others, well meaning and noble as those opinions may be. It is part of our social human nature to want to help others, advise others based on our own experiences, but that doesn't always translate into sound, beneficial advice when it comes to footwear or other very personalized types of equipment.
Whether the majority of pilgrims or forum participants use or don't use a certain type of footwear should not influence your own footwear decision. In fact, basing your decision on this could be the worst decision for you.
I have been a hiker and walker most of my life and was fortunate to know, from experience, what footwear might work best for me on my Camino. If you don't have the benefit of this type of experience, you will need to experiment, preferably in consultation with a foot specialist or physiotherapist, until you find what works best for you over long distances and varied terrain.
This forum is a great place to gather general information on equipment issues, but when it comes to something so personalized as your feet and the best footwear, you may be doing yourself a true disservice in allowing others to answer this question for you.
If I had heeded much of the forum advice on footwear and attempted my Camino in my Nike runners or Keen sandals, I'd have likely not gotten further than Pamplona and probably would have done considerable damage to my feet.
If you have time, why don't you try taking one of your weekends, doing 10 or 20km on Saturday and then again on Sunday in your preferred type of footwear? That would give you a pretty good idea. Short walks in sandals can feel deceptively comfortable. You really need to put footwear to the test before you know if they will work for you.