So tools such as Grammarly aren't comparable with AI language models such as ChatGPT, and people using Grammarly or related tools are not doing anything wrong, in my opinion.
Yes, you are correct that Grammarly Tools does not generate AI. I did not see any way to write it. We who write use Grammarly after writing because these tools correct the small mistakes in our writing. Grammarly is never an AI generator. Chatgpt is a writing AI but not a grammatically generated writing system. Grammarly makes our writing beautiful by correcting small mistakes. It's a good tool for us.