Interviewer's perspective:
This might be your only interview for the day, but we have interviewed people the entire day. I don't know about others but I would shut my camera If I am not presentable and ask the interviewee to shut their camera/share screen even if there is nothing to share. Interviewing someone is a tiring job, I don't think anyone wants to interview just for fun, it's just part of the process. I am not justifying those who don't care about the answers given by the candidate, but trust me 90% or even more candidates lie on their resumes and they don't have any knowledge about it. When asked, they just give "ghumaau" answers like this is some stupid college viva. Bro, we know you're lying. Just accept that you don't know and move on. We can focus on the areas you really worked on and are confident about. But they refuse to surrender and go on.. this is the point we lose interest in you. On the other hand we enjoy a good candidate, some are so good that they explain things which even we didn't know. Hope you get it why interviewers are like that