Re: Members can add tags
The member id is recorded in the database when the tag is added, so if it’s a member doing inappropriate tagging, you can deal with them individually. Normally, regular members won’t sh*t where they eat. It’s not something I would worry about. Instead, install _ck_’s Human Test plugin to keep bots from registering right off the bat.
https://bbpress.org/plugins/topic/human-test/
Also, I think it’s been like this for a while with tags, going back to the 0.73 release I think.