I've seen a number of users who have appended "Reinstate Monica" or "Supports Monica" to their display names, resulting in a very long name. Back when I started on Stack Overflow (around 9 years ago, I think), using the platform for this kind of messaging seemed to be highly frowned upon. Has that changed? If so, can I put "Abolish ICE!" or "Punch Nazis!" in my display name? Or are only certain political opinions acceptable there?
To clarify: When I originally posted this question, I mentioned that the long name is awkward to @ to reply to, and that including it in replies might be disagreeable to the person replying. These are indeed part of the motivation for the question, and indeed still an aspect, but some mitigations have been offered in comments. The main point, however, is about use of the display name field for off-topic messaging in front of every one who sees the user's questions/answers/comments, whether there's policy on this (vs just de facto tolerance), and whether the policy (or tolerance) will be applied equally.
Update: I now have mods retaliating against me because of this question.