Can you reliably block DoH? I guess if you can figure out the DoH endpoint someone is using you can block that. On 443 blocking: Doesn't that defeat the purpos

Can you reliably block DoH? I guess if you can figure out the DoH endpoint someone is using you can block that. On 443 blocking: Doesn't that defeat the purpose of having a "smart" streaming tv. If you are willing to blanket deny 443 you might as well just block the whole address and turn it into a dumb tv. And on that note. I have set up unsecured wifi access points before and seen the neighborhood samsung tvs eagerly use it to send their nefarious spyware payload.