I've been mentioned before but have not had serious criticism or even more than a line or so of commentary. On other anon memes, I've had mixed reviews or criticism. I think you have to be okay sorting through what's useful to you and what isn't. If it's OTT criticism that's weirdly personal or where the person doesn't have anything specific, it's best ignored. If they bring up something, maybe they're right, maybe there's something you could have done better but it's not what they think it is, maybe it's something you knew about but couldn't fix in time, maybe they're wrong and no other reader will feel the same, etc.