I tend to map things like this as “tourism=information; information=something” where “something” is the most appropriate value from https://taginfo.openstreetmap.org/keys/information#values . If nothing else matches, “information=route_marker” would work.
This make sense if these markes having permanent position and they number is rather smaller.
But these poles can slightly change position every year by repairing or improving marking ( but still lead by path ) and also their number over a mountains is huge.
Next problem could be that at certain zoom level these poles coud be too dense or sparse.
I would like rather tagged path which is marked by poles if possible.
I didn’t found any satisfying way to tag path marked with poles or cairns so I am thinking to propose new features trailblazed=poles trailblazed=cairns
Is it good idea or are there some objections? Never done this before so pls advice me