I have never responded to one of your post, and am not sure which flake on Recompense you are describing. I assume it is at the belay ledge, where the tree stump remains.
I know that flake has a little flex, but there are plenty of options there for other pro. as well. Anyone could stress over possible dangers to climbers, and many off the older climbers can think back on close calls they had on the rock.
I took a 100 ft. fall in Yosemite because I was careless driving a pin behind an expanding flake, instead of placing a nut,
( which I did, when I went back up).
I wouldn't stress out over other peoples lack of experience. People make mistakes in every sport, and some learn from them;
hopefully without injury or worse. It really amazes me how few injuries there are in this crazy sport.
Last week I went up and checked out the piton I placed 45 years ago on Intimidation, on the 2nd pitch, just as you traverse left to Bonfire ledge. I often wondered just how good it was over the years, and knew that since it wasn't driven in all the way, was a poor placement. Since I was going up to check out the rockfall, I thought that I would check out the pin as well.
I took a hammer along, and removed it, with little effort. It would not of held a long fall, but I remember it holding me in a fall, when the slab was all wet.
I put it back in, but plan to go up soon, and try a shorter lost arrow pin, which hopefully will be a better placement.
I also cleaned out a seam, with my nut tool, just to the right of this pin, which looks like a BOMBER nut placement for one of those small brass stoppers.
If you want to worry about something--how often do the pins get checked, with a hammer, that climbers clip everyday.
Most of the younger climbers have never used a hammer, and wouldn't have the experience to know if a pin is good or not.