If someone kills a person, they do not need to state it was their goal for it to be murder. The bible is clear on the fate and future of earth. Proponents of leaving the planet envision a doomsday where life on earth ceases.
example
"This hypothetical day when humans will supposedly have to leave Earth has been likened to a “
Doomsday.” Hawking has asserted multiple timelines for this eventual moment, but he is certain that, at some point, we will have to find a new home."
'We are running out of space and the only places to go to are other worlds.'
www.nbcnews.com
"
“Now—if you owned a hard drive with an extraordinarily important Excel doc on it, and you knew that the hard drive pretty reliably tended to crash every month or two, with the last crash happening five weeks ago—what’s the very obvious thing you’d do? You’d copy the document onto a second hard drive.”
That is why we
need to leave Earth. We need to have
another plan. A safeguard"
In its early life, the Earth would have been peppered nearly continuously by asteroids smashing into our young planet. These fiery collisions made our world what it is today. It may seem like things have changed since then, given the vast assortment of life and wide blue oceans—and things have...
futurism.com
", "Musk explained his feelings, stating, Either we spread Earth to other planets, or we risk going extinct. An extinction event is inevitable and we’re increasingly doing ourselves in."
- same link
There is some truth to the doomsday/extinction idea. Jesus spoke of it also.
Matthew 24:22 Unless those days were limited, no one would survive. But those days will be limited because of the elect.
In other words unless Jesus returned, everyone would die. The message from some
'chicken littles' in the world is that man must save himself.