I suspect that LaLiga lawyers and lawyer-techs aren't perhaps the most technical so when they learned to figure out IP's they made it their go-to way of working without even considering that they might need to contact CF (or Github that also seems blocked in Spain).

Finding abuse contacts is actually a M:N problem for the entire industry since we skimped on IPv6 (Had we gone to IPv6 providers like CF could've just assigned customers their own IP's and third-party fallout would've been minimal).