Are we stating the DM-ing isn't a skill set, and thus one can never enhance their DM-ing skill?
I'm certainly not got to receive advice in this thread, that is clear. 🃏
The thread was started with the premise of players 'checking out', wasn't it? It wasn't started to discuss relationships so toxic, that severing those relationships is the only reasonable course of action.
Do we need 4 pages+ to discuss irredeemably toxic dynamics?
I don't think so.
Be well all, and Good Gaming!