Same buddy. I use a projector and a laptop with an air mouse and my 'apps' are just browser shortcuts set to auto open at specific urls in kiosk mode.

DRM crap ruins the typical end user experience.

Buddy, we can't even get phones fully working. Though apparently and Amazon echo can boot linux.

The issue usually is proprietary streaming services, not a lot of interest from them on Linux/etc support and the unofficial options are usually kind of janky. That does make total sense but also kills it's chances of getting wide support / adoption which limits the growth of the projects.

Lineage OS supports some TV boxes

It usually uses strong cryptographic verification with very specific proprietary firmware.

In short very hard. It is easier to get a separate device

Yeeeeah, I was gonna say this, too. There are easier, nicer looking ways to drive your media consumption through a computing device on a TV. Hell, there are very nice vertical mounts for laptops that look good as a showpiece, no need to strap the thing to the back of the TV.

But hey, it's a kid doing a hobby project. It's a fun thing to do. I support it.

I've tried this myself, but I've found that you really need to commit to mainataining your own media library, or to using pirate streaming services.

None of the big name legal streaming services work well through Kodi plugins due to the DRM on the content. Usually end up with stuff limited to 720p, stereo, no hdr.

I really wish the streaming companies would chill so it was easy to get a single unified interface for all my content in the highest quality available, but no, someone might pirate it in a marginally easier way then they already can!

I like Android TV (Lineage OS) better

Isn't rPi underpowered for anything media? Last one I tried to run even struggled just opening a browser, much less a video. rPi3 or something...

Anti Commercial-AI license

WAF = Web Application Firewall? Or is there some other meaning?