This precisely. We're in fact nowhere close to a sustainable off world human habitat, with all the inputs/outputs such requires, not to mention the ecosystem needed to sustain such in perpetuity.

If people are really interested in perpetuating "the light of consciousness" among the stars, they'd be working themselves to death to make life sustainable here on Earth, where we're from, which still presents far more hospitable conditions relative to anywhere else in the Universe we've so far identified. Say you're a billionaire with such an interest - wouldn't your funds be somewhat better directed ensuring we don't annihilate ourselves in a mad max hellscape locally, before we suffocate in the void when the O2 machine breaks down and we can't source replacement parts because Earth is now a wasteland?

The Great Filter is us, and so far, doesn't look like we're making it past.