The wording of these threat messages gets more hilarious by the day.
Mods have a position of trust- so do admins and company management. We trust them to maintain a non-evil platform, and in exchange we give them content and ad impressions. That applies to all users not just mods.
As I see it, they just altered the deal.
No more is it 'we provide a platform, you are welcome to grow your communities on it with minimal interference', now it's 'you'll run your communities as we tell you to for our benefit, and if you run your community in a way we don't like we will take said community away from you'.
If that had been the offered bargain from the beginning, many if not most of the Reddit communities would have chosen a different home.