Van Dijk is playing him on because Quansah has had to come out and face up Adingra.
Endo hasn't done anything. He hasn't come across to face up Adingra and he has let Gross go. Quansah ends up 2v1 against both Adingra and Gross. Just because the pass doesn't come it doesn't mean it wasn't poor play by Endo.
Just embarrassing, as per.
You've taken a screenshot at a millisecond where a through ball would have put Gross in without him being tracked by Endo or offside. Only issue with this is that Adringa clearly isn't about to pass the ball.
In real time, Endo is tracking Gross perfectly well, and then makes a decision to stop as he see Gross is running to the defenders and then following that, offside.
How you can proportion any blame to him for the goal when neither he nor the man he was marking were in anyway involved is just ridiculous. True to form though I guess.