1. You need a filter to use the internet. When you have the ability to connect to everything, without limitations, its a problem.
2. Does google home not involve using a screen at all?
(3. There is a separate issue when it comes to a google home device, etc, and that is, if Moshe Rabeinu saw you using it, he would think it is an avodah zara. An inanimate object that all you do is talk to it and ask it for things? Seems like the physical manifestation of an avoda zara, albeit not one that people are actually serving knowingly, but are unknowingly giving chizuk to the concept of avoda zara.)