074/110 has worked for Motorola boxes for 20 years and counting. They have never ever had discrete power commands. The new X1 boxes, no longer made by Motorola, have a new code set for the first time in, yes that’s right, 25 years. Still no discrete power. Just leave them on and don’t worry about it. They don’t seem to shut off with updates.

The other cable company in the area tends to use Scientific Atlanta boxes, which will turn on with a numeric key press, as long as you enable it in the settings. That setting does get erased during updates, and will have to be re-enabled once in a great while.