Ok, so we all know that going Warp 10 makes you be everywhere in the universe at the exact same time, and, more importantly, it turns you into an oversized lizard who gets Captain Janeway pregnant, but how does Warp 10 differ from transwarp? What allows transwarp to get around the infinity-occupying, lizard-transmuting problems posed by Warp 10?
And now that I think about it, how did Tom Paris manage not to destroy the universe by occupying every point in it simultaneously?
Warp 10 is infinite speed in Voyager and the non-canon Okuda technical manuals. In the rest of the franchise it's a different story. TOS and TAS passed warp 10 all the time without salamander transformations or infinity speed, and TNG did it in "Where No One Has Gone Before" and "All Good Things"
Voyager also massively slowed warp speed down, making crossing the galaxy a lifelong journey despite TOS, TAS and the classic movies zipping to the rim of the galaxy, back to Earth and to the centre effortlessly.
Just chalk it up to one of those weird unexplained and best-left-unsolved discontinuities, like "The Alternative Factor" where one drop of antimatter could destroy the whole universe, when in every other episode it's common starship fuel.