Sayin we didn't care about La Liga is absurd. We definitely did. But I think people meant to say once the gap became too large we didn't care as much. Meaning we didn't care if the difference was 11 points or 16 points.
Personally, I only want to finish above Atletico and lessen the gap with Barca as much as possible, as long as we still give priority to the CL. Right now I'd rather we lose the Liga match on the weekend before our quarter final ties than put a lot of effort into it and risk fatigue in the CL. The league is lost, finishing 3 points behind Barca rather than 13 isn't worth editing the CL prematurely. So yes the CL has the priority now and we don't care about the league as much as usual.