I’m assuming OP means that the fictional warp drive and light speed drives from the television show and motion picture respectively, are not in fact real. But I could be totally off base and this random commenter on a Star Trek forum created a conspiracy theory nobody has heard of. /s
For one you can not go the speed of light, it is not possible.
My point is that the spacecraft in both star wars and star trek behave in a way that suites the plot. If the writing needs a craft to to take longer to get somewhere then they will add distance to the journey or decrease its speed.
It is a waste of time trying to argue about fictional story telling