ACF was one of the most important enterprise plugins in the ecosystem when they hijacked it. They essentially did a supply chain attack on the top WordPress users and expected there to be no repercussions.
He was also apparently upset that WP Engine was not pushing Jetpack, Automattic's own thoroughly mediocre service package that they try upselling to every WordPress user.
So I get the impression Matt is really, really, really out of touch with his own userbase, and he still sees the primary feature of WordPress as a blogging platform.