Rarely do I ever think someone should eat crow, especially over an opinion. And it's refreshing to to see someone admit they are open minded enough to change their opinion. That's like a unicorn here on this board, so kudos there.
That said, if there is ever a time someone is deserving to eat crow, this is a text book example. You didn't just give an opinion and change your mind. You stated your opinion as truth and called people stubborn in the process. And as already quoted, you even realized your statements were worthy of eating crow.
I don't care if you do or not, but it's a bad look.