^Retweet. It's grounded in both real-life science and realism in fiction.Voyager can't survive the galactic void.
Centuries of nothing.
No natural resources to mine/harvest, and no people to trade with.
It's not almost impossible, it's completely impossible.
Kathryn would need a new ship with a different sort of engine to cross between galaxies, and that's even if in this supposition that the Galaxy they have flung Voyager too is next door to the Milkyway.
Unless the show creators come up with the most ridiculous macguffin ever.