You cannot copy others' work and claim it is your own. Thus, you cannot copy ChatGPT's work and claim it is your own. There is a qualitative difference between having an LLM generate text and having a program spell- and grammar check text. Since you are not going to highlight which passages in your article ChatGPT wrote for you and instead intend to pass it of as your own creative work it is dishonest. Very dishonest. If caught you will get in trouble and may be kicked out of your academic programme.

There is not a single paragraph that I might “steal” from ChatGPT. I’m consistently using multiple LLMs to write, polish, rephrase and all other kinds of edits

I really don’t get the point of the necessity of typing manually. Can you explain?