Edit: I agree a lot of the criticisms sounds like people being total prude, but there's an undeniable truth to it. They're crass as a selling point, but the death of professionalism is a comedic gag, not a selling point. The Hololive talent aren't angels, much like women aren't angels, but when we see for example Watame being a creepy old man (dubbed Wata-oji by her fan group) it's kinda rare and is a nice character break, as opposed to just her character. And there's more examples of these charming character breaks.