Thin client architecture allows people to use into products they otherwise wouldn't have been able to. Loss of control is only bad for an individual if they used to have more control. As someone who doesn't have a high-end rig, I never had control in the first place. With Stadia, I might now have an option to try the latest games. I can't help but feel that "Stadia bad because centralized" is a poorly thought-out argument.

There's room in the world for both centralized and decentralized services. Which one you use depends on your situation.