Maybe I’m reading this all differently than you but my reading of it was Renya’s extremely poor performance and effort in training before the tournament actually began was a key reason he didn’t play much.
If so I 100% understand Berhalter’s decision. I mean I guess we could do the old Allen Iverson practice thing but while Renya absolutely could become a great player, he is far from that level now, IMO, and has no business disrespecting his teammates and coaches by half-assing it to such a degree in the immediate buildup to the tournament.
If you are looking to do something in the World Cup as the US, looking the other way while one of your more talented players mails it in during practice isn’t the way to do it, again IMO. There is a level of professionalism that has to be absolutely expected from everyone when you are a 3rd tier team in this kind of tournament.
So IMO this is 100% on Renya, based on what I have read so far.