I get similar. I have ME which means when I'm tired or brain fogged, I get cognitive dysfunction including memory recall issues, can get words mixed up and problems finding the right words (so often revert back to the simplest form of English). Have a real issue with remembering peoples names.
I often write posts on here and get stupid things wrong like the spelling of the simplest words. Thats why most of my posts have been edited and re-edited. When I read them back I think
did I really write that? Like having two different brains. Really bizarre.
But still, that's no excuse for that whopper.
Mixing up someone you have huge respect for, with one you have none. That's a whole new level.