Every people deserves the right to self-determination

I’ll support a nationalist struggle if it directly helps the left but I feel like anything in the white/european sphere outside of the territory wanting to do a USSR 2 should just be ignored. Like how does an independent Catalonia get us communism? It’s just going to be another state in the EU, maybe left leaning but it will still be capitalist. Look at Ireland, the IRA is fucking dead, even if they got back north Ireland at this point it wouldn’t fucking matter as it’s just libs running it.