Wikidata has them as instances of "trade association" & "guild". 

https://www.wikidata.org/wiki/Q1139056

Any bulk edit would definitely be better discussed elsewhere, or done by an enthusiast's own volition.

What I'll do is contact the user who added the tag (who is still active as of yesterday) and see if they have any thoughts. 

For reference, these are the two objects in question:

Girdlers' Hall: https://www.openstreetmap.org/way/163903385

NO wikidata

Brewers' Hall:

https://www.openstreetmap.org/way/164201018

https://www.wikidata.org/wiki/Q114308609
