It's 2023, there's no such thing as "catholic Spain". Sadly, Spain is one of the most progressive countries that there are, and I say this as a Spaniard.
I am a conservative. Not that I want to flaunt my political affiliation, because I know no one cares, but in HN "X is one of the most progressive countries" could sound like an endorsement, and I wanted to make sure that it didn't sound that way.
I am from another "catholic" european country (where most people are born into catholicism), the religion, despite being rightfully irrelevant in most people's lives still has some impact on which topics people want to openly talk about.
I spent half my life in a catholic country and the other half in a protestant one — so I think I can somewhat judge the impact the religion has even on mostly unreligious people.