Amen.
Honestly, that entire thread is a great demonstration of why ChatGPT is literally worse than useless -- i.e. actually actively harmful -- as a resource for learning Japanese. (Even more so than my earlier attempts to break and confuse it.)
I've always felt like learners obsess too much over what "JLPT level" a particular piece of grammar/vocab/syntax/etc. is, but the fact that 会う takes the particles に or と -- and never を -- is something that would be taught in any first-year Japanese 101 class or introductory textbook.