$150/month is a lot of money, but split just 100 ways, that's $1.50/month. If the user base is too expensive, emotionally, to do free server administration for, well, why would you want to do that job then at all? Which speaks volumes.
And I'm not discussing emotionally-heavy, but public standing within the community you've convinced to trust you with their social media algorithm
In your view, contrary to the lobster.rs post, running the server should instead cost $1,500/month and goes up exponentially to support a handful of users. Have I got you right?
How is having a good public standing to a very vocal minority about modern day sensitive topics not a high emotional cost to bear?