Perhaps it does on certain aircraft, Rainboe old chap, but none I've flown.
Certainly if I don't get a cabin secure call by 500ft, I'll be going around. They shouldn't call in our company unless they're strapped in and ready.
I do miss my old type with a screen to look back into the cabin. It also helped to see if pax were getting up before we'd got to the stand. Perfect for brake checks.....