Blocking what?
"Echo Show and Fire TV now display a standard web view of YouTube.com and point customers directly to YouTube’s existing website. Google is setting a disappointing precedent by selectively blocking customer access to an open website."
Google is blocking customer access to an open website by... directing said customers to the exact same open website. Maybe the interface with web browsers is a bit shit on Amazon's thingies, but forcing people to use a browser instead of an app to view the same content can hardly be described as actually blocking anything.