From the WordPress Trademark Policy (https://wordpressfoundation.org/trademark-policy/)
The abbreviation “WP” is not covered by the WordPress trademarks, but please don’t use it in a way that confuses people. For example, many people think WP Engine is “WordPress Engine” and officially associated with WordPress, which it’s not. They have never once even donated to the WordPress Foundation, despite making billions of revenue on top of WordPress.
Someone should have stopped him from making the rambling statements he's made.
If it's a trademark dispute, limit the the public statements to the trademark issue. Don't muddy the waters with demands for revenue share or upstream code contributions.
Again, it wasn't about "WP", it was about "WordPress" (and "WooCommerce"). Don't focus on "WP" just because the company name is "WP Engine". It's not relevant to this matter, their claim of trademark infringement is about "WordPress" and "WooCommerce", not about "WP".
"For example, many people think WP Engine is “WordPress Engine”"
Remember he only just now updated that policy to say that, and tried to make it retroactive.
https://joshcollinsworth.com/blog/fire-matt Scroll down or search to "But Matt wasn’t done."