If you really get into the ins and outs of theoretical physics down there where the "Theoretical" has a capital T and the "physics" is in italics, you start tripping over weirder shit:

- Quantum entanglement is instantaneous and what keeps it from transmitting communication is the observer effect

- The observer effect is some hand-wavey shit along the same lines as wave particle duality, IE "shit that was made up so that undergrads could move on"

- The theory of relativity says you can't accelerate something TO the speed of light. It also says you can't decelerate something FROM the speed of light. Which means that anything going faster than the speed of light can't be made to go slower and anything going slower than the speed of light can't be made to go faster which means they can never interact. It does NOT forbid either from existing.

The speed of light is just where the asymptote lives. There are asymptotes throughout mathematics. One can, with confidence, say that there are iron-clad laws preventing information or matter from traveling past the speed of light. One cannot, however, point at theoretical physics and say "because all this shit is absolutely rock-solid."

Edwin Hubble turned the Andromeda Nebula into the Andromeda Galaxy barely 100 years ago. Superconductivity was discovered in 1911, but superconductors you could wow your physics class with showed up in VWR Scientific when I was in high school. The age of the universe has gained two decimal points of precision since I started college. Not saying warp drive is right around the corner, saying that "faster than light travel appears to be impossible" is likely a safer thing to say than "faster than light travel is impossible" based simply on scientific progress.