Piling onto the anecdotes, I always do a rough maths of likes vs. dislikes before watching any video from unknown creators. For pure entertainment, a 100-to-1 r

Piling onto the anecdotes, I always do a rough maths of likes vs. dislikes before watching any video from unknown creators. For pure entertainment, a 100-to-1 ratio or better means it might be watchable. For science, maths or computing maybe 20-to-1. If a woman, black person or LGBTQ* person is presenting I assume that the haters have already got to the downvote button, so I give them about a 10x slack.