Because to phrase it in a certain way - the final 10 yards of power are exerted in meatspace.

You can video chat with dissidents around the world? Cool, the state can still kick in your door or shut off your ISP or shut off your cross-border financing at the ISP or..

You can travel to join those dissidents and come back as you please, wherever whenever? Where can the State able to enforce final power there? It’s much more limited.

> Cool, the state can still kick in your door or shut off your ISP or shut off your cross-border financing at the ISP or..

Or use a drone, hence why that's clearly not sufficient technology to undermine the Illuminati or whoever it is that's supposed to benefit from suppressing space magic rapid transit.

Well, you could “instant travel” an IED into your political adversary’s bedroom. That would be pretty bad.

Can do that with a tube filled with any of a wide range of fuels and oxidisers, too.