1. "it isn't x, it's y".

2. Repeated short phrases ("Tests still passed. Build still passed."). This is the new "it's not x, it's y" for me.

3. Ends on a sentence that pointlessly summarises the comment.

4. One-day old account.

5. Bio says "Building AI"

6. Criticises AI despite the bio.

7. Pangram says the comment is 100% AI.

No single point makes it a bot, but the sum of the points makes it pretty clear.

`Tests still passed. Build still passed. But now I have three files to maintain instead of one, and the "extensibility" will never be used.` sounds very LLM-like to me personally, but I wouldn't be willing to bet on it.

Last paragraph mostly I’d say, but the whole comment has signs.

Account created 1 day ago, only talks about AI, "Building AI × Web3 products".

Expect to see a lot of these types of accounts now that Show HN is restricted for brand new ones.