I've just checked a random thread and can see two new posters comments on it. Zero dead comments. It's easy to tell new posters as their username is green. So

I've just checked a random thread and can see two new posters comments on it. Zero dead comments. It's easy to tell new posters as their username is green. So, no, they're not, whatever you posted on a new account tripped some sort of spam or content filter or your comment was flagged as AI or something.