There are easy ways to fix that at the router level, but DNS-over-HTTPS clowns ruined this.
Agree! I regret letting my Vizio TV stay online for as long as I did.
At first it was fine, and I did get a UI refresh a couple years back that was OK.
But then some update caused it to start ripping control away from whatever my last HDMI input was so it could show me ads (which fails). Even though it's perma-offline now, it still messes with my inputs sometimes.
I don't like DoH due to the central gatekeepers its current implementation in browsers encourages but I don't think it really changes anything here.