Another grumpy old man reporting in
Actually i'm totally with you about the suckiness of misleading use of tags for pure additional attention... this erodes somehow pretty much the actual usefulness and function of tags in general. I personally try to be as precise about which tags may be useful and/or relevant to the provided content as possible. Sadly quite a lot of other users of the platforms are wayyyyy less thoughtful about this. Just like: if just
everything is "highly recommended and advertised to you"; you'll probably ignore it all (just to survive and not become insane)....
Anyways... in the case of Finn Wolfhard especially, i's suggest to be a bit more forgiving, 'bout that, because well - due to "Ghostbusters: Afterlife" he indeed IS part of the francise now and people will associate this with seeing his face.
For example: i remenber in some interview Dan Aykroyd complained some time ago about, how wherever he is on any location for whatever reason, there'll always folks show up dressed as ghostbusters 'n stuff, even when there's no actual topic-related reason (e.q. he's on a tour to promote his vodka-brand of anything alike). So people tend to remember certain persons (especially actors) in a certain context - this is quite normal i guess and we shouldn't be bothered too much by this. Just some random pic of Arnold Schwarzenegger on a chair at the beach has a high chance of being tagged with "Conan", "Twins" or even "Commando"... you get the idea
Just my two cents: the truth lies (like so often) somewhere in between. Yes - misleading use of tags sucks a lot and should be handled more carefully, but Finn Wolfhard tagged as anything "ghostbusters", i wouldn't consider such misuse.
best wishes and keep on bustin'