Literally ask why, anybody can say it's trash but if they have something negative to say, use that and make the best of the situation. That there is a vocal part of your audience giving you feedback, if you ask why and they give you their actual thoughts.. it's an oppurtunity for you to grow! If you can make changes and keep the story you wanna tell intact, that's great! If not, let 'em know!
If you ask why and they just insist on being a prick though, just block 'em. What are they gonna complain that they got blocked bc they were being rude as hell?? Nah, keep 'em out lol