You can have "this mandate is so important to our mission that we want you to leave if you don't agree" or you can have "some of this mandate is literal and some is just jokes"
You can actually, and it's far worse as an employee. They can enforce the rules as if they are deathly serious while not being accountable for doing that to your employees because they are actually a joke. As an employee you'd much rather have the accountability to what they are saying in formal letterhead. Really not a place you want to be, and the words they wrote should be taken as seriously in court no matter the presentation.