Mateusz Konieczny
Why it would hide anything? Any sensible data consumer will ignore unknown tags.

Obviously, I will not delete tourism=attraction tag (I am mapping remotely and I have no idea is it local attraction).

"It has zero usages on taginfo" - well, any tag started from that.

"Why do you think this needs to be changed?" - sole tourism=attraction gives absolutely no information what is mapped here and always should have "real" tag.