I was going to write buy Apple TV and never ever connect the actual TV to the internet, but:
- I am unsure whether modern TVs utilize ethernet over HDMI to connect to internet through Apple TV (I have no idea why Apple TV should allow this, but I don't trust Apple to not accidentally enable this)?
- I can only imagine nefarious five eyes reasons for why Apple released Apple TV that plays 4k60 exactly like the previous models, but now has 8 GB RAM, powerful machine learning CPU, and built-in microphones that are impossible to disable
So, apart from getting used prev gen Apple TV (and still having to trust company whose leader has to accept Trumps's lunch invite), I have no good advice.
- Almost nothing supports Ethernet over HDMI (this was already discussed in this thread).
- I can imagine several reasons for upgrading the CPU. Supply chain related, mostly.
That said, I am perfectly happy with previous generation Apple TVs and won’t be replacing them any time soon.