You’ve proposed a theory but what’s your argument for it? Essentially, what makes you think so? Without that, we’d just be left guessing what your reasons are and wouldn’t be able to hold a meaningful conversation.
That said,
I'm increasingly put off by broadcasters that use body language like sighs and eye rolls, satire, and impersonations in their presentations.
I’m not sure why this comment is here. Is this what you think is bad quality content? What makes them bad? Body language is part of human communication, so unless you state why you think it’s a problem that it puts you off, we can’t guess what you’re trying to get at aside from hearing you voice an opinion.