You can if you have a pre-2022 LG TV. It’s more akin to jailbreaking since you can’t install a custom OS, but it does give you more control.
Rerouting DNS requests to your Pi Hole is the solution to this, unfortunately not every router supports this. My Netgear router, for example, doesn’t have the option, and of course I ended up getting a model that doesn’t work with custom firmware. I’m considering setting up a Raspberry Pi as the gateway for my network so I can do stuff like this.
It’s perfect!!