I would love to do this, but dumb TVs pretty much top out at the upper-mid range. If you want a high end panel you're getting all the bullshit too, unfortunately.

I worry that these manufacturers will collude with xfinity to do an "iot workaround" to exfiltrate "customer preferences"

But why do you think your android device will have fewer ads and spyware? Unless you rolled your own OS, it probably is infested with crud.