Anonymous posting is critical, but there is a case for validating identity to keep bots and foreign actors under control. Problem is, I would not trust Twitter to protect the identity info - 100% chance we’d see names leaked to the lapdog press.
If you are the real Donald Trump, then there should not be anyone close to D Trump, as an example. It just muddies the water and confuses everyone. High Profile people should id themselves.
Take for example PIERRE DELECTO aka Idiot Mitt.