You can literally use tools to check grammar perfectly without using AI. What the LLM AI does is it predict what word comes next in a sequence, and if the AI is wrong as it often is then you've just attempted to publish a paper with halucinations wasting the time and effort of so many people because you're greedy and lazy.

Proofreading involves more than just checking grammar, and AIs aren't perfect. I would never put my name on something to get published publicly like this without reading it through at least once myself.