Agree with all of this. Football could easily stamp out dissent, time wasting, etc. with a few changes in approach.
Thinking back to last night, whilst the Cedric handball was a big error, over the two matches I think there were 4 VAR decisions:
1 - Portugal penalty. Original decision by ref: wrong. VAR review led to correct outcome. It was a clear foul.
2 - Ronaldo yellow card. Original decision by ref - didn't see it. VAR review - probably correct. It wasn't violent conduct but was probably a little too robust.
3 - Cedric handball. Original decision, correct. VAR decision, wrong. No idea why it was referred back to the ref.
4 - Spain goal. VAR confirmed that Aspaz was onside.
So, despite all the furore, that's 3 out of 4 incidents where VAR improved the outcome.
They need to tweak the referral process to make it faster and less intrusive but on the whole it seems to be producing better outcomes.