Why be troubled? It's simply a replica of an iron cross, and those type of iron crosses can be found in a lot of places. The one in question near Foncebadon is one of many. Not unique. I could actually have one made and put it in my backyard, complete with a pile of stones at the base. Would that be troubling? If so, why?
Truth be told (and not trying to be offensive), the cruz de ferro on the Frances has become more of a tourist draw than anything. The very first time I was approaching it on the Frances I saw a tour bus stop on the roadway next to it and about twenty people get out, muck about the little hill of stones, taking selfies, making noise etc. Mind you I didn't bring a stone or anything with me to deposit there and had no intention to stop there, but that spectacle sort of solidified why I just walk past it every time I have walked the Frances. I've since been told that local government has to remove the stones and such from the base on a regular basis before it gets too high, too tall. Picks it all up with a bulldozer with a bucket no doubt and hauls it away as fill.
Mind you, I understand what the cruz de ferro represents, but it just appears to me it has been lost in the shuffle of the popularity.