Going from prole renting a shitty apartment who barely owns a car and a washing machine, to forcibly deported or forced to renounce your culture and teach your children the invader’s language and culture is not “potato, potato”.
Sometimes there are other things to fight for than capital, even if this might sound like a foreign concept to Westerners whose country hasn’t been directly involved in a meaningful non-imperialist conflict since 1945.