A volley is a deliberate play but the player never has control of the ball. I think using that as a decisive criteria is an inaccurate way of thinking about the question - appreciate that makes it onto
@Runner-Ref 's guidance, but to borrow their terminology, guidance =/= law.
And if we are taking the guidance as truth, I'd also point out that only one of the considerations (control) in the second slide is definitely not fulfilled. The movement of the ball is as expected and the view is unobstructed, and only the last two (which are really just 2 ways of saying the same thing) are maybes. And he still has time to stick out a leg and make the defensive play - as I've seen said a few times on social media, if VVD wasn't there to collect the clearance, that would be consider a top-tier defensive action. It's entirely reasonable to think that a defender in that position given the ability to pause time to choose an action would have chosen to try and play the ball out for the corner there.
Remember as well that this was given as a goal on field and the offside was recommended by VAR based on a subjective element. So we're looking for something that is Clearly and Obviously a not deliberate play - and for me regardless of what the right decision might actually be, this is a long was off being
clearly an uncontrolled deflection. Right or wrong decision I can accept either way, but there's no case for a VAR intervention being correct here.