How do you know it's not his/her thought? Just because others have had it does not mean he/she did not put effort into considering it.
If the spouses-to-be at a marriage ceremony say "I do", would you leap up from the audience to denounce them as frauds because obviously they heard the vow-formula before a hundred times? Hopefully not, and not only for reasons of decorum.
In contrast, most of the LLM slop I deal with from coworkers involve statements that--while less formulaic--are ones they can't even recall saying and are unwilling to defend when questioned.
If we go with your interpretation instead, then sm-silversight simply misread the comment they replied to and their post doesn't follow. No one doubted OP felt sincere about not wanting to read AI.