I'd much rather ask you in return why you would tolerate such scenes, and how you think one should distinguish tolerable from untolerable.
Isn't it much better to define nogos broadly, (e.g. violent conduct, or red for a tackle from behind), - again regardless of the force you apply, the face the guy makes or the heat of the moment? (Noone justifies the tackle against Eriksen with the fcker did play the ball, instead in the spirit if the game we say tackle from behind and do not care about minute details.)
I think we enter troublesome territory when trying to justify this scene with the positioning of his thumbs, because it opens up all sorts of problems elsewhere. (Although admittedly, it's seemingly what the industry looks for, see new hands rules, VAR, etc). Point being is if a point for violent conduct can be made, the decision for red is fair, and when the point must be made, it's unfair not to decide on red.
Apart from that, VAR threatens to change the culture towards stuff that's very doubtful, to say the least. Real-time feeling vs slow-motion vs standstills - you bet it isn't long before playing the VAR becomes fashionable, and virtually noone wants this neither, right?
(I confessed earlier that I really dislike brawls, and as someone said above, even halfway aggressive behavior in a brawl counts.)