More like Indyref.
If there’s $10 left over one admin can buy 2 slices of pizza and a can of pop in payment for 1000s hours of free labor.
Nothing is perfect and nothing is permanent.
If you are extremely motivated to have an account that can never be pulled out from under you, you must run your own instance.
In the fediverse, its plausible to do this and still be connected to others. There are.lots of single user instances. There were some small businesses opening where you could pay someone else to do the admin work for you if you are disinclined to that kind of geekery yourself.
I think this is it https://defed.xyz/ all together
But on any instance you can scroll the the bottom and click “instances” in the footer to see its relationships to others
Indyref was broadly supported by the left but brexit was a right wing project. And indyref was pro-EU, which was reflected a few years later when the same voters who wanted to leave UK voted remain in EU.
The concept of leaving a union of nations has no inherent other political implications.