Oh wow, I am singularly unimpressed.
You aren't actually much past a beginner, four years under an instructor simply isn't long enough to build up the base of knowledge that would entitle you to criticise senior instructors. There is nothing, of course, that entitled you to be rude, obnoxious and arrogant nor to make personal attacks which are not allowed on here.
As far as I understand I compete with black belts, if I compete. That's an advanced level.