I would support reverting all usernames that refer to a ongoing conflict to more neutral versions (including covert references in foreign languages)
Is it necessary to do so at this time? Probably not, but if it became an issue, my opinion is that this would be the way to proceed.
Argue the merits, or not, of your positions in your questions, and in your answers, not in passive-aggressive names. One of of the problems with such names is that they kind of shortcircuit the reader's appreciation for the user's postings.
When you, as a "fan of country X" reads a post by user "countryXsucks", from country Y, that will, understandly, turn you off to any arguments that, perhaps, in this particular instance, maybe country X did something questionable in the past.
And, yes, that includes usernames supporting Ukraine, sorry.
We have had questions, and enforced changes, on usernames in the past.
We have a number of conflicts where there is an ongoing and the site would not benefit greatly from "clever user names" if it filled up with them on:
- Russia vs Ukraine
- Israel vs Palestine
- Pakistan vs India
- Trump vs Biden
- ...
Last, there is an inherent problem where the popularity of countries are not equivalent on this site.
Country X is popular while country Y is not. So that means, for the exact same questionable behavior country Y's supporters will get much harsher treatment than country X's about their naming choices.
Pro-Ukraine monikers are popular enough, but how would the posts from a pro-Russia username get received, regardless of the quality of their posts? That difference in treatment seems a valid concern, even if I am quite pro-Ukraine myself.
p.s. If it seems biased of me to state this and not have raised this concern in the past: this question hadn't been asked on meta.
(and yes, that could include my own, though my username is not related to any real-world conflict, merely an incident involving SE's parent company, on a subject that I presume they've since learned to handle more gracefully than they seemed to have done at the time)