Would you let someone who just learned how to check the oil in their car work as a mechanic on your new Bugatti?  That’s what you are doing when you watch technique videos on youtube and take blog advice from blue purple, and most brown belts.  Sorry if that hurts your feelings, it is the truth.  Not all information is created equal.  I know this is America where most people have a privileged attitude and feel empowered to do whatever they want!  That’s cool.  But there is a natural order to things and experience is the name of this game.  Consider putting more credit in those who have kept their nose on the grindstone and earned their way.