I think it is just opportunism. The cool thing these days seems hating on Google, even if you have a really poor reason. It is just confirmation bias for those that have tried to convince themselves that Google is a failure despite their profits literally showing they are not failing as a business.
They can be incompetent and still successful. Look at Android. Its competition is an absolute joke, but Android still can't get dominant market share in the US even though it is cheaper than free to use in products. That's just bad management.
A business built around extracting a non-renewable resource can make record profits while still being doomed in the long-term. In this case, the resource Google may be unsustainably harvesting is consumer goodwill and partner trust.
I don't think so. Firefox has been on a mission for some time to try to market itself as the safe browser despite Chromium being open source and have roughly the same telemetry enabled by default in both. Shutting down a consumer service like Stadia isn't all bad.. in all honesty I think it is the most disappointing to people who used it on a regular basis and not some person to come by and give their two cents about how they feel Google wronged them for something unrelated.
People liked Stadia and that is why this is hard on some people but the are not going to jump on the Google hate train over every dramatic event that is often just hyperbole. They'll remember Google for creating something awesome and ahead of it's time, and Google may actually revamp that to scale to personal gaming that runs on local hardware instead.
I believe a lot of game services streaming services just aren't that profitable. The hardware required to stream games to consumers in HD or 4k is expensive. Heck, just a few months ago I was looking at graphics cards and the lower end were still priced around $600 for a modern consumer graphics card. Then having a bunch of servers and ways to dedicate those to users using some form of graphics sharing and doing to with very little latency cost a fortune and probably didn't produce the revenue because of that.
I'd people are leaving Google or this then they can certainly try make an appealing argument about how Stadia damaged them but that Netflix, Hulu, etc don't ever pivot their plans and pricings