This is the only reasonable solution. I've got an OLED LG "TV", connected to an Apple TV and a receiver for proper audio (using HDMI ARC).

To turn everything on, I press a button on the Apple TV remote and everything is up and running within five seconds or so (from standby/sleep mode). Powering off the Apple TV also turns off the display and the receiver via HDMI CEC.

Edit: http://www.eiman.tv/misc/power-on.mov

I found that my receiver was still using 50W while in "CEC-ready standby", while it's only 2W in normal standby, so I never use it. I'll just press a few more buttons.

That's incredible. 50W is wholy unnacceptable.

Indeed unacceptable. That figure is quite comparable to S1 sleeping state of a desktop. Whereas a computer consumes ~10W in S3 state and can even wake up out of that when triggered by LAN.

The biggest drawback to this is the lack of support for 4K in the YouTube app on Apple TV.

And that the YouTube app forces its ads and shitty recommendations down your throat. A NUC running Kodi sounds nicer. (Yeah, yeah, pi-hole. It’s a bandaid, IMHO)

Also, Apple‘s streaming services being ever more annoyingly shoved in your face on menu screens.

I think a simple Youtube-dl + web based front end that can run on a Raspberry Pi would be a great way to help lots of people bypass YouTube.com/apps, make it as simple as PiHole for users to get going. Have it organize files in a way that would allow clients like Plex to easily access that content. Easy 4k + ad-free content on any device.

it doesn't have any ads if you buy Youtube Premium

This requires accepting their ToS & "privacy" policy and providing validated billing data to Google, an advertising company already stalking everything you do on the web.

Some people might not be comfortable with this, or not even trust them to begin with. I personally don't mind paying but there's no way in hell I am providing any personal information to Google.

Pihole cannot block youtube ads. You need uBlock, that can block parts of DOM tree inside a page, knowing hosts is not enough.

Pine and others have an opportunity to pair with Kodi, like Pine did with UBPorts and etc. to market a Kodi device.

YouTube app is supposed to support 4k on tvOS 14. I don't know if Google already updated the app or not.

Any reason why an Apple TV and not a Roku or a Chromecast?

Roku and Chromecast do the same BS as smart TVs

...do they?

I have a Chromecast and have never seen an ad.

They don't display ads on chromecast, they collect info for future ads there.