Yes. They release multiple new ships every year to keep the funding flowing, a large chunk of which are still not in game. They also have packages for $27k that let you “own” most of the ships in the game. Plus armors, skins, guns, multitools, and subscriptions.
Same reason we haven’t “proven” that bigfoot, the loch ness monster, or jersey devil are “bullshit”. In order to prove something, you need to find evidence for it. If there is no measurable evidence for something, that does not disprove it, it just does not support it.