One only gets to see all the oilrig and dome cameras.
We miss all the rest like airfield, bandit, outpost, underwater labs

Nope, it's only designed/intended for static cctv cams to be usable inside the plugin.

What do you mean?
The cams in those places move?

Would this also mean any cameras placed by RustEdit would also not be supported?

RustEdit cams are usable via this plugin if you set them up correctly inside rust-eidit