You answered your own question. As you said, most smart TVs go into a sleep mode, so they appear to turn on in a near instant. But if you ever actually power it down, most take up to a minute to boot up.

Sounds like an addiction

This shit has been a nightmare for us

I’m pretty close to the plant. I’m new to the area and I don’t really know anyone. I didn’t get any emergency alerts and they didn’t use the sirens. Is this normal? I found out by accident on the Nextdoor app this morning. I didn’t hear any official statements until 9:30PM! It’s been going since 5AM!