I don't think I agree. The big difference in total users and monthly active users tells me lots of people abandon their accounts. As long as that policy is in place, it'll naturally shrink because people leave and there aren't any new users anymore to replace them. The only question is at what rate that's going to happen.
And I also don't agree with people who don't understand the Fediverse shouldn't be here... People should be here because it's a nice place and they have a good time engaging here. The exact technology behind it shouldn't matter too much. If at all.