Sadly we underestimate the liveability of this Earth. Muskism makes people believe to the false premise that we can just buy a new planet, make it habitable with magical tech. Supported with pseudoscientific buzzwords like Terraforming etc. So we can recklessly consume this planet and jump to our new home when this one depletes. No need to care about our current home because it's a jumping board. Interesting as an old Sci-Fi fantasy so it attracts smart people, but if you really think about it's just lies and stupidity.

Musk was also into the solar panels and EVs so it's not all trash the planet. Even if living on Mars or Venus isn't practical we might develop interesting tech trying.