I think the commenter only meant that there is such a thing as RF engineering. But that to be effective, RF engineering would require the local authorities to have some level of control over the region they want to shut down.
Thus, the authorities must not have that control.
I agree with the commenter from a technical perspective. It's extremely easy to cut off SpaceX terminals in some area if you control that area.
I just don't think that's relevant. It's not the local authorities the rest of the world is lining up behind, it's the regional players around Myanmar. The regional players can countenance the local authorities only slightly more than the warlords and gang leaders. What the local authorities want is almost completely irrelevant to the regional players.
That says nothing about their power to control the satellites overhead.