That is a bad alternative, as in no alternative at all really. I don't want a device that requires me to do network engineering to prevent it from doing things I didn't ask for or want.

1. I'm not going to tell my parents to get a Pihole.

2. Wait until your smart TV starts using DNS-over-HTTPS (DoH) to by-pass it. (Paul Vixie will be proved right eventually IMHO.)