That’s because “conservative” isn’t an ideology, and it never has been. Conservativism has two core beliefs: “conservatives” refers to a specific group of people defined by common traits, and those are the good people. Each tranche of conservatives defines their own identity, and then they define whatever they want as “conservative values.”

This German guy on the train probably is very conservative. He is not more progressive than an American conservative. He has simply defined his group of conservatives to include the people who benefit from universal healthcare. He sees the value to his own group, and so he supports it.

He is not more progressive than an American conservative

Yes he is. It doesn’t matter how you explain it, the “conservative” here has beliefs considered further left than American conservatives. Can’t dismiss that just because you can explain it some other way also.

It’s because Poland has few “immigrants”, so he thinks Polish people (everyone) should have healthcare. If there were more “immigrants” then he would say Polish people (as in Polish ethnicity only) should have healthcare.
I’m not dismissing him, I’m saying that conservativism isn’t left or right. That’s a false equivalency putting the conservative/progressive ideologies on a spectrum. That’s not how conservativism works. There is no left or right, only selfish and principled. Do I want this? If yes, then it is a critical part of our culture and history and must be protected from all change at any cost. If the answer is no, then it is an abhorrent condition that must be stopped at any cost. Did I have a different opinion yesterday? Doesn’t matter, because that was yesterday. Will I change my mind tomorrow? Doesn’t matter, because if I do, then I’ll have a really good reason.