It was a fair critique, but if you're looking for feedback I think people were probably responding to your last line.

"I'm glad you're having fun vibecoding" comes across as very backhanded and condescending. It sounds like you may have actually meant that genuinely, but it doesn't read that way in text form.

"you sound sus af" is not respectful or constructive in my opinion. It's a description of your own feelings, not a critique of the project, and there's not really any way for the author to respond besides ignoring it or saying "sorry you feel that way" or something.

I think that line undermines the rest of your comment, because I'm left thinking that you don't really expect good answers to your questions and you just think the whole thing is dumb.