Webb made the point in his interview that he wanted both the referee and the VAR to be more confident in making decisions independently. Taking advantage of the other’s input but not feeling obligated to agree with it if they see it differently.
In the Palace incident, Dean was probably wrong to advise the referee checks the monitor. He maybe thought there was a case that it was a deliberate handball. But it seemed pretty clear that the player headed the ball accidentally onto his own arm, which is specifically given as an example of no handball. Perhaps in the past Madley would have felt obliged to agree with Dean but he correctly stuck to his original decision and an incorrect VAR intervention was avoided. Yes, ideally Dean wouldn’t have got involved at all. But the correct decision was reached in the end, which is the most important thing.