If some of the tags were common, then they could be used by the user to filter content. Things like "impolite", "not-pc" (or whatever the pc version of that would read), "combative", "inflammatory", "informative", "insightful", etc. They would also give me an idea of what kinds of things trigger others. I'm in my mid-50s, and I still have a hard time not accidentally using a phrase that others might consider rude because I've been using it all my life and don't really think about what it actually might mean.

I don't know if it would be helpful by giving people more information, or detrimental by giving people more information on why their comment was downvoted.