I don't think it sounds like sour grapes at all. I think the HUD looks neat, but not neat enough for me to pay to have it. And then since it's basically a projector through a horizontal plate of glass onto the windshield, I'd be concerned about keeping that clean so it doesn't scatter light, or look terrible, etc. Sometimes I think we get caught up in the excitement & desire to have something just because it exists or someone else has it, but that doesn't mean it's necessarily worth having.
VWoA obviously made some decisions that have made some people unhappy, but that was always going to be the case no matter which balance of options, price, etc., that they settled on. It's fine to disagree with those decisions, but instead of focusing on what other regions got, it should still boil down to whether the model as specified in the US is attractive at the price vs other options which are actually available to us. For me, the ID.4 is still at the top of that list.