I have the same issue with my xiaomi 12x, before with a OnePlus 5t, but I gave up on it. It’s not a Google Pixel issue but in my observation a Google Chrome Issue. Firefox on the phone uses the DNS that DHCP defined for the devices, chrome ignores them and uses googles DNS. I don’t know if that’s “on purpose” or a bug, I find it pretty annoying - but what can you do…

Whenever I need to access a locally defined URI, like “netdata.home” I open it on Firefox.

… but why don’t you just use vidious and clipious as a client? They even have an Android tv Client. Is there anything that “Viewtube” does better?

No, pihole won’t help you there because what you want is nothing a DNS can do, you need a proxy server to handle that. How this works depends on the proxy server you are going to use.

Well, again someone using a “free” commercial product and complaining when the offer is changed.

Usually “a server” runs a lot of different things and programs. Multicore is especially beneficial in that scenario because even if a certain program does not support multicore processing, the os will just run “the other app” on another core.

So the concept of which app can use multicore processing is mainly relevant for desktop PC’s that run “one big app”.