To blatantly use AI-generated queries or text it and just paste it will not help. AI could help you understand what you are posting about but not directly copy and paste it. I believe it can be a tool that can help you learn about the things you have yet to understand. Most importantly, you need to understand it and fact-check if the AI has generated a factual thing because you can never really know unless you thoroughly do it.

It can improve your posting quality but not in the way that you think. It's all about having your thoughts about it and diving in deep into the topics with your thoughts.

Grammarly, like the other members suggest would help you in grammar.