This has to be an established concept/theory. Or just a massive coincidence that shows like Star Trek have been using “Ringships” for 30+ years now.
It is established. It’s the next part in Einstein’s treatise where he said we couldn’t break the speed of light. Everybody pays attention to his energy curve part but only the hardcore nerd bother with the part where he says the solution is to condense space within a field and fly through that. I don’t know if anybody in Star Trek had actually read that part when they came up with the warp bubble, but the concept definitely pre-exists Trek.