They forgot the whole genocide thing which is kinda necessary for this to work out
This is why we colonise space, at least the planets without aliens living there.
Almost every colony ever: gets oppressed and exploited, fights for independence, gains sovereignty, becomes either a tense ally or a hostile rival to their former empire
Earthlings: “maybe we should colonize space”
A planet where no conservatives are allowed. We put them on rockets to the Conservatives only planet.
So you want to send those undesireable people somewhere else? Maybe to conserve your way of living?
Also the whole industrialization, privatization, and rise of capitalism thing in Europe that led to successive waves of emigrants leaving or being coerced from their homelands. I think in general people don’t leave their communities and families without some kind of direct or indirect violence.