DV7 may have mod power but I don't remember. The only issue I have with tags is people being assholes and not just ignoring threads they don't want to be a part of (nailed the two people who were posting tags in my PM to TSY about the tags a couple weeks ago on the thread as well).
tag removal if it's "dwarves play iwth their dicks" or the usual nonsense is not a big deal. But it's still safest to just leave it. And certainly any actual post should just be left.