It definitely bears all the LLM hallmarks we've come to know. emdash, the "this isn't X. it's Y" structure - and then, to cap it off, a single pithy sentence to end it.
Also bears all the hallmarks of an ordinary post (by someone fairly educated) on the Internet. This would make sense, because LLMs were trained on lots of ordinary posts on the Internet, plus a fair number of textbooks and scientific papers.
The — character is the biggest cause of suspicion. It's difficult to type manually so most people - myself included - substitute the easily typed hyphen.
I know real people do sometimes use it, but it's a smell.
I think some software will automatically substitute "smart quotes" for regular quotes and an em-dash for a double hyphen -- I know MS Word used to do this. Curious if any browsers do. This comment was typed in Brave, which doesn't appear to, but I didn't check if Chrome or IE or Opera does.
The comment was not wrong though so I am not sure I understand if flagging it for the sole "it was most likely written by the use of AI" reason is completely valid.
I've noticed people who are using LLMs more, myself included, are starting to talk like that.
Oops I mean, you're absolutely right, those ARE hallmark signs of an LLM. Let me breakdown why this isn't just your imagination but actually...