No, still don't buy it. There is an argument that Gary Beswick missed a foul, although Salah also had hold of Silva at one point, but that isn't really relevant, it was a potential foul in a nothing area.He missed two instances of consequential contact that led to the City goal and had to be rescued by VAR.
Klopps reaction was unacceptable, but him missing the easy foul there is an excellent example of how you can't just look at a foul and assume you can ignore it because it won't be consequential.
I don't even have to dig through clips for all the other moments - 2 of the 3 key events in the match come off him deciding he can just ignore a law because it doesn't feel consequential, before being almost immediately proven wrong. The only thing this is proof of is that trying to referee to secretly adjusted laws rather than the book causes you more problems than it solves.
Even if it was deemed to be a mistake, which I accept, this seems to be the justification by a lot of people for the abuse, how is that so. If you put in a click & collect order at Argos, B&Q, Homebase, etc, and then turn up to collect it to find they've messed up and it isn't available, what is your reaction? After all that is a mistake, has inconvenienced you far more than a winger not getting a free kick in a football game, so are you justified to do what Klopp did and scream in the shop assistant's face? No, of course you aren't, as that isn't what society expects, yet for some reason it seems to be acceptable in football.
It doesn't matter what job you do, you will make mistakes in it. Whether that is order processing / stock control or refereeing, you will get it wrong from time to time and the consequences of doing so is you will annoy people. The difference is the reaction, scream in the face of a store assistant and as a minimum you are getting booted out and probably banned, possibly arrested, yet in football it is deemed acceptable?