UEFA will use it in the CL from the QF.
In the PL there's already criticism from fans and teams about not implementing it this summer. The problem have never been VAR, but incompetent referees. VAR worked really well during the World Cup with minimal breaks.
As for Valverde then he's always ambiguous in his statements, to the point it becomes annoying and inspires little confidence. Always pointing out potential dangers rather than instilling some fighting mentality or winning mentality. Something he might be doing in the dressing room, but gives a bad look to the press and reasons for them to talk trash about it and speculate.
I mean all managers say that XYZ team is dangerous, but he takes it to another level
And the same with everything else really. Always giving a comment that can be interpreted a million ways instead of being clear like some of his predecessors were.