> (Personally, I don't think any government is going to allow this.)

Then that's a pretty clear signal for how free that government is.

As someone who lives in a democratic country, I am quite loathe to trust any foreign-controlled communication platform. I also do not support or endorse violent politics. Seeing how social media has triggered political riots in Sri Lanka, Bangladesh, Nepal and now in Iran (probably with the aid of foreign sponsors / agents) to destabilise these countries, I am fully in favour of governments clamping down hard on such kind of "dark networks" that they don't have oversight over. Note that this is nothing new - governments always have been mindful that foreign agents in their country should not have a way to communicate with their masters, and that is why everything from radios to satellite phones require some form of license to operate.

Isn't it well known that the "protestors are foreign agents" line is just extremely transparent bs that governments use to silence dissent?

a great many countries ban satellite phones too.