This is at least a main part of the reason. I use an open source client for GOG on Linux, the only reason why is because they don’t natively support Linux.

You may be able to root the LG TV and use https://github.com/webosbrew/youtube-webos, which supports ad blocking and sponsorblock. Or you could install it with developer mode, but developer mode has a limited session time.

In my experience using an older android phone for self-hosting, the downside was a lack of ports and I/O. Being stuck with a single USB 2 interface and wifi was less than ideal for my use case.

I ran a Minecraft server on termux and (IIRC) AnLinux once. It worked surprisingly well.

If I am remembering correctly, Australia also has laws that allow the government to force private companies to build backdoors. I think it was the Ass Access Act.