Hot take: it should be illegal to do these "agree with me or take a silver parachute" deals. This is the CEO blatantly forcing their political views on their workers and purging anyone who has a different opinion and wants to speak it.
And yes, just for completeness sake (and because he's tangentially involved in the Matt drama), that includes DHH's "no politics" rule at 37signals, which (if my fuzzy memory is correct) was also enforced by a similar "agree or parachute" deal. Yes, "no politics" is political, it's stopping the music after claiming a seat in musical chairs.