Pihole catches a lot of the trackers and crap coming out of my android tv. On my pc I see it as an extra line of defense after ublock.

Hulu stopped working properly on my Shield after using Pi-Hole, so I guess it was working?

On the pihole subreddit there's a wiki with lists of domains you can whitelist for certain services. I had to whitelist something for xbox live to work.

Yeah, even the paid (non-ad) hulu has trouble if you block its telemetry servers.

You can't use uBlock everywhere, .e.g phones, tablets, TVs.