I don't know that I agree with that. I guess it depends. For example, if they bought the land and let it return to nature, is that really morally wrong, especially given the remote location? Humans aren't the only ones who might want to use that land.
That would be cool, but it think the implied context of this post is to use this as an investment to make money. People that are verified on Twitter are generally not good people.
Work visas allow for longer, but you need corporate sponsorship
While this is mostly true (there are ways around a sponsor in some cases), there are other visas available such as business investment options. Those, however, take money and I assume anyone who could do it wouldn't be interested in a < 4k USD house.