Just because people here might not be aware of the term "remigration". It is a Neo-Nazi phrase, popularised recently by the German AfD, that includes the deportation of citizens, to their "country of racial origin". There is no "right" view on this and the use of the language is revealing.
Would you prefer a different word? Facist also works. Xenophobe, racist, hater, etc also work. "Migration critic" is probably a more neutral / politically correct word.
Leftists threw these words around for so long that they are utterly devoid of the emotional power they once had. Now the backlash is coming, but most of the leftists on the internet--who've spent the last two decades hurling insults instead of engaging in good faith--are so unpracticed as to be largely incapable of engaging in good faith. So they just throw around the old words and wonder why they don't work anymore.