My guess is that s/he does not write in English good enough, and prefer to use AI to "enhance" the text. My recommendation to the OP is to post the original tex

My guess is that s/he does not write in English good enough, and prefer to use AI to "enhance" the text. My recommendation to the OP is to post the original text in Japanese with a direct autotranslation. (Or just the autotranslation.) It will look more authentic. [Hi from Argentina! Expect to see some weird errors in my comments. I try to avoid them, but they slip.]