Personally, myself I have been greatly impacted by this measures. Several services of mine were unavailable because LaLiga said so. No notification, no justification, they block and that's all. It has been a shame since the beginning.
> No notification
What ISP? I'm using Vodafone and if I accept the insecure connection (because of mismatched certificate), I get served the notification. You don't get that?
What would it look like if you sued La Liga for using their lawful blocking power in a way that injured you?