I've said this for a while now.
If, after the introduction of a supposedly impartial "all seeing eye" of VAR, certain teams are still consistently given favorable decisions whilst other teams are not (for very very similar "offences") then the system isn't impartial; it's just another tool to aid the favored few.
The Doku challenge wasn't even given as a foul, let alone a yellow or the red it deserved.
How can VAR look at that challenge, which the ref hasn't even seen as a foul, and NOT decide that a clear and obvious error has been made? They're checking to see whether a red card offence has taken place and the ref hasn't even given it as a foul? Surely that's the definition of a clear and obvious error? Incidents like this surely MUST result in the on-field ref being asked/told to look at the incident again on the monitor. But it's just waved away.
We're back to the old "Ref gives it, VAR backs them up" that some teams get, versus "Ref doesn't give it, VAR backs them up" that we consistently get. Obviously not always but consistently enough on the big decisions and in the big matches.
Consistencies like this are evidence of corruption, pure and simple.