If you know Spain, you know this makes total sense:

- Half the country or more just doesn't work or do anything else when there's an important match anyway.

- There's a big intersection between "people that doesn't care about soccer" and "people that knows how to use a VPN"

- Matches are usually at night, past 7pm. It's well after the average citizen work hours.

- There's not really huge internet companies there that can lobby the other way around (e.g. infrastructure collapse because of the block).

So in short, the ruling is incredibly stupid because they're allowed to do so, save for the vocal minority, the vast majority of the population doesn't care: they're watching the match.