It's all fun and games until they start to claim those people on the census and get more congressional seats "representing" their serfs.
The democrat ideology isn't so much great replacement theory (LBJ was okay with right wing Cubans immigrating to the US without having to go through the legalization process). But no matter which party you have a preference to, what party ends up benefiting objectively doesn't matter. We can merge the New England states to be one state (and Democrats lose 10 senate seats) if it makes things even.
The GOP would then have to figure out which issues they would concede and which issues they would keep in order to stay electorally competitive. It's nothing new. Both parties have done these sorts of things throughout history (the GOP on gay marriage, the democrats on masks, vaccine mandates, and gun control (constitutional carry has become very common throughout the states; and it started with Vermont).
Immigration might follow suit as this country strides more towards the ethos of liberty.
So will the backlash to kicking people out of hotels, schools, and perhaps apartments to house migrants be enough for the right-tribe to seize control and prevent illegal immigrants from counting towards apportionment?
Nobody is advocating for kicking out tenants to make way for government housing. The most I've seen is hotel rooms (that were already empty) being paid for by the taxpayer (which I don't even agree with because I don't like socialized housing; I unironically prefer letting people freeze and starve to death rather than take care of them because I call myself a fiscal conservative and I want to reduce government spending and if that means people, if that means children starve and suffer and freeze, so be it). I don't expect everyone to have this view if I frame it like this, and that's fine.
But the 10th amendment allows localities to make their own decisions. If the decision angers you enough and you live in a place like NYC, you can move to Westchester or Putnam County if you want, where they probably don't want to give the undocumented taxpayer paid for housing.
I feel as if it would be poetic justice to take left-tribe voters and send them to central America while transferring their citizenship to the people they invited over.
If the individual left wingers consent, fine. If they don't, it's not fine. You may even make Central America Anglophone majority if that happens (that would be decent). But if they live in a country they hate, they should leave (preferably to Cuba; it would be decent if Cuba became Anglophone).
But people are individuals and should be treated as such.