Yeah this is a particularly irrelevant approach that tends not to be helpful, I definitely agree. Truly wild hypotheticals don't usually help us talk about social issues (with some rare exceptions).
I will say that I would take the - perhaps somewhat unpopular - position that even with some people in minorities claiming "tone policing" there can be an element of inappropriateness, disingenuousness or manipulativeness, especially in a workplace so I'd put in the same general category of "phrases you shouldn't throw around in public unless you've sure you want to cause havoc" together with "white knight".
I've seen it happen - with a person (who was actually in two minorities) who was very abusive to others (not just co-workers, pretty much anyone who got in their way, accidentally or otherwise), in a pretty straightforward way, using sneering, demeaning and openly contemptuous language towards their co-workers (worse, in some ways than "white knight" or the like), claiming co-workers were conspiring against them because they didn't prioritize this person's needs above all else, and when an older co-worker pointed out this kind of language wasn't really appropriate/helpful in workplace (which was putting it mildly - in a normal business they'd have been fired on the spot - but this was charity sector), immediately rolled out "Omg I'm being tone-policed!" followed by more obviously-inappropriate language clearly designed to provoke a further reaction so tone-policing could further be claimed. This was a person in their late 30s at the time who went to a top university so 100% knew what they were up to, note. Said person eventually made wild allegations of racism against a co-worker, which turned out to wholly falsified (like to the point of actual editing of emails etc. - dunno how they thought they'd get away with that) and got fired (an almost impossible feat in that organisation), but not before about half the organisation left because of this bad behaviour (several years later and it hasn't recovered, I note).