Sorry, updated my original comment—I meant to qualify it to only those cases where it's blatantly obvious. Obviously a lot of ambiguous comments will slip through as a result, but I agree with you that false negatives are better than false positives.
Your comments use em dashes. Many would claim those are vastly overrepresented in AI language and thus an account overly using them are blatantly AI.
I don't think your account is AI just by these few comments, but I would like to point out that most rubrics one might use to determine what is obviously AI might end up including the way you talk.
If there was a truly accurate tell, some algorithm you could feed a few sentences in and it could tell you "yep, this is 100% AI", then yeah sure use that. I don't know you could realistically build that machine, especially when it comes to the generation of text.
Can you show an example of "blatantly obvious"?