It's stupid because it's simply text completion on a GPT-2 level. There's already an association between space travel and carbon, so you hear space travel and just go "yes, but global warming". No thought was put in either acquiring the association in the first place, nor in deciding if this is a good moment to use it. And definitely no fact checking.
It's a mix of stupid and evil because this kind of text completion turns the public discourse in an echo chamber of unproductive repetitions, which creates the strangest of paradoxes - like the more climate concerned somebody is, the more likely they are to be against nuclear power. This never happened because anybody made the case for nuclear being bad for climate and people actually believing this claim. There was no case and no claim in the first place - just GPT-2 style reflexes and blind associations. Space tourism bad, bio-fuel good.
And it's plain evil because it assumes that we should only dare to dream if we follow the current orthodoxy. It's not even something like "in order to dream we should make sure survival is ensured", because it was never about doing the math or actual tradeoffs. It's simply that some dreams are being painted as dirty and we shouldn't be allowed to have them, ever.