Should we get rid of DBS checks, by the same logic?
Given that DBS checks can be set up to cope with name changes I wouldn't call that logic. And more to the point, deadnaming is not forbidden in the DBS. Just as a gentle reminder, we're talking about Twitter here.
Something horrible? The name they were born with? If that’s enough to cause someone pain then they should probably have some therapy. Because the problem is not with external reality.
Are you talking in that way that to all traumatised people who no longer want to be known by their original name? No? And contrary to your assumption, I do care about them and they probably should have therapy, it's nothing to be ashamed of. The "external reality" is that name changes are legal, those are their real names, and "No what is your name, your real name, your name before you changed it" questions are usually dick moves.
Seeing the difficulties you have ignoring me I'm just going to go ahead and try to ignore your misleading, obfuscating, disingenuous, hypocritical, incredulous and thick posts and see if that helps you stop demanding I justify things I haven't actually said. And seeing as you claim you can only understand yourselves during our little adventures in comprehension but I can understand both you and me and so can the third parties who message me to marvel at you, unless you show evidence of being able to communicate with people who disagree with you I'm going to have to conclude you're either gaslighting, obtuse or have trouble with complex sentences.