I don’t think those comments are generated and posted automatically by a bot plugged to their github repo. I think they are generated by the author using an LLM and copy-pasted there - or if the account is plugged to some LLM, they are at least manually reviewed. The answer to the replied-to comment are posted from 10 minutes to some hours later. I don’t think they lost their mind to the point of giving unvetted access to their reputable account to an AI that simply posts for them. That said, they could al least strip the obvious/uneasy parts that give very LLM vibes, specifically those quoted in the op

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At my company we have been using AI very heavily to write code lately, and if that sentence was used to justify a 10k+ diff, whoever wrote it/vetted the change would have their access to the codebase revoked