@husbandpanda It depends on multiple factors. I have people on the $6/month plan with having several dozens of active users. I have people on the Galaxy plan with a single user.
If you follow or are followed by thousands and thousands of remote user then the $6/month plan will not work. If you have a group of friends that almost don't follow or are followed by anyone remote, you can probably have a couple dozen without a problem. Again, it depends on the users you are hosting.