This is a very interesting question.
A lot of instructors are producing content that is well intended but each and every golfer has a unique swing with many quirks (especially amateurs) and so a tip that is applicable to one golfer may not be for another.
Most amatuer golfers (including myself) aren't capable of filtering out the useful stuff for them.
I think there is a lot to learn from YouTube if you have a decent understanding of your swing and know what to look for.