The first sentence of the Wikipedia article on conservatism is exactly what I mean:
> Conservatism is a cultural, social, and political philosophy and ideology that seeks to promote and preserve traditional institutions, customs, and values.
By promoting the incumbent ideas, there's no chance that they "freak(s) out wider society" as the OP said. The ideology is simply to resist change, which will almost always be less controversial than advocating for change.
Just like it's not communism to advocate for better welfare, labor rights, affordable housing and so on.
And european mainstream right is no longer right for the last few decades on those topics. Today’s „far“ right sound like what mainstream right would say 10-20-30 years ago depending on exact country.
You said it yourself - even the right used to tolerate illegal immigration. But you were okay voting the center right at that time. And now you're voting the far right who are putting them in concentration camps. So you're far right, but you didn't used to be.
Here „far“ right offer is to deport illegals and curb new migration.
Also, we have detention centers since forever. What do you propose to do with illegal migrants waiting deportations instead? Put them in prisons? That's a wee to harsh, isn't it?
Of course, then people can start talking BS about muh concentration camps with allusions to soviet and nazi camps. But those camps had some specific features that ain't present in detention centers.