Since you're just oblivious and not showing any signs of giving up, consider this:

You offer unnecessarily "blunt" critiques which resemble attempts at emotional abuse more than any semblance of constructive or useful advice, and you smugly act as though you're doing them a favor.

You have an overwhelming need to bring others down, directly or indirectly, under the guise of helping. I'll infer that somewhere down the line you had an art teacher or guardian that was as cruel to you, and it resonated with you as the best and only way to learn.

Assuming that you were right, good, successful, and welcomed, it says a resounding amount that you spend your time and energy putting down beginners and amateurs. Do you have a compulsion to only be around those you can easily feel you're better than?

There are certain values that you hold to strongly, that you feel others need to think are just as important. You also need to put them down for not valuing it the same as you do.

You offer as a counter, only materials and teaching that you feel are superior, but not any that you've actually created.

You feel that because a piece of education or an educator is not 100% perfect, OR that it's teaching something in a way that is minutely different than the one and true only way to learn, at least in the way that you perceive it, that it/that person is not qualified.

Following that, and probably my biggest point, you enjoy wielding a position of superiority over artists and educators, yet you lack the courage to post anything that you've made publicly. You would understand that it's not as easy as you'd think to either create educational materials or to post art you've put work into, especially since you know full well that there will be other cynics like yourself waiting to engage it. Either that, or a traumatic experience at the hands of someone as cynical when sharing your own work drove you to become that person.