We need to kill these companies and their business models. As fun as it is for smart people like us to perform one-off lobotomies, it doesn't solve the problem.
Some Chromecast products already won't function unless they can talk to Google DNS servers[1].
But the fact that doing so is severely limited to those with the technical knowledge and ability means it's still not a forgivable situation.
It also scares me as to what the future holds when such devices are hard coded with a DNS server using DoH.
I've dug into this, and this is true for certain models and firmware versions, but not for others.