Mock is the operative word - go live in the tropics and pretend is like living on Venus etc - liberal non-think
Sound like a buncha crackpots to me.
Antarctica would actually be a fair trial. You’re weeks away from logistical support, bitterly cold, but you can breathe in an emergency. You’d need to be in good health to go.
The Likely Health Checklist for Going to Mars
https://libertyislandmag.com/2019/05/17/the-likely-health-checklist-for-going-to-mars/