I don't remember people disclosing that they used a spell check when that became popular. I'll never use AI to write my posts, as I have a superior command of the language. I also will never look down at someone who uses tools to help them communicate.
Using spell checks or Grammarly isn't the same thing as using AI. Not everyone is fluent in English and knows the language good enough to spell without making mistakes. That's where spell checkers help. But they don't create the content for you. They only correct the mistakes you made while writing. AIs generate everything for you, and they shouldn't be allowed. If it's against the rule to copy-paste from other people, it should also be against the rules to give an AI a prompt and just copy and paste what it generated on Bitcointalk.