Women wouldn't be voting if they never broke the law first.
Giving a Tax amnesty to very rich tax dodgers (as the current Spanish government has done recently) has been ruled to be against the Rule of The Law and the Spanish Constitution, yes? Who is going to jail for this? No one.
The constitution only matters when it matters to some.
I expect this will go further up to the European Court of Human Rights, and, like in previous cases where for example German law (and constitutional changes) conflicted with these protections, the European Convention on Human Rights will be ruled to stand above any national law or constitution.
What's being argued here is that seizing the .cat TLD when a page registered in it was hosting "unlawful" content consists in pure and simple censorship. It would be similar to the US government taking control of the .com TLD because some website hosted on a .com domain is selling drugs. This is censorship.
To quote the article (which apparently you didn't read) again:
> Whether it's allegations of sedition or any other form of unlawful or controversial speech, domain name intermediaries should not be held responsible for the content of websites that utilize their domains. If such content is unlawful, a court order directed to the publisher or host of that content is the appropriate way for authorities to deal with that illegality, rather than the blanket removal of entire domains from the Internet.
I'm in favor of a referendum so the catalans can decide if they want to be in Spain or not. But I'm not in favor of a unilateral decision.