Assuming there is no truth in any conspiracy theories about Mercedes favouring Nico or Lewis ( OK, I'm going to assume it ! ), then I think the annoyance with Nico ( surprisingly and perhaps too public, but fun for us ! ) was very understandable.
Mercedes, in their dominant team position, have generally allowed their drivers to race, and that is what F1 fans want to see and is good for the sport.
But within that, they have clearly trusted their drivers to not take clear risks with both cars. I would assume that it has been discussed, although it is pretty obviously sensible to many folk with much less intelligence than Nico. Eddie Jordan just looked foolish passing the blame to Mercedes, when today Nico was the one very much at fault. And he had let down Mercedes. F1 fans understand the difference between being allowed to race ( good ) and putting both cars in real danger ( bad ).
In my view, there is a big difference between Lewis not letting Nico through in Hungary when they were both still on for good constructor points and Lewis would understandably see it as compromising himself in the title race, and today's putting both cars at such risk.
Personally, I think it was a wrong call to have asked Lewis to move over, but understandable in just too overconsidering the constructors points.
If Nico was so miffed, he is totally failing to see it from Lewis's point of view ( that it was supposedly a fair fight between the title rivals ).
Nico botched up big time today, and there is little excuse. Having been allowed to compete, he took.it to a stupid degree.