I find the constant pedantic nit-picking frustrating as well. It's a sign of either a lack of ability or an unwillingness because of bias, to think and sort through concepts and ideas on their own merit and just put aside the ones we don't agree with into either a pending or a discard file in order to grasp the big picture of what is being said.
In the real world no one person, book, movie, video, course etc has all the answers to everything at all times so if you go around dismissing every person or book or movie because their was an error or you didn't like the colour of his jumper or the way he said it your mind will stay permanently closed!
It is possible to get the gist of what someone is saying in its entirety or to understand the message without accepting all of it or the messenger. If we can learn this there isn't anything or anyone we can't learn something from.