He’s not going to step down. And if his beef (as stated) is companies making money with WordPress without contributing back, where’s the line? The top page builders like Divi and Elementor all do the same with their cloud offerings. Does he sue them next, simply for using the word “WordPress” to indicate compatibility in their marketing materials? Who wants to invest time and money simply to have Matt steal your work on a whim.
Don’t make the mistake of assuming Matt’s scope is limited to WPEngine; the kind of personality that acts in this way will do the same to anyone.