Earlier quoted context omitted.
AI writing is worse on the merits: it is lower quality and has concerning externalities associated with its production.
Often the commentor wants to take a shortcut and just say it's AI written and hand wave it away. A comment should argue the merit of the work not attack the source or medium.
If the author does not care to take the time to craft their message, why should I care to take the time to read it?
If you used AI, and I cannot tell, I don't care that you used AI. But when it's clear and present almost immediately, I feel as though the author does not respect their audience (of which I am a member).
As every composition teacher would say: "use your own words."