Yes, it's true.
But when your (one's) configuration is like the one we have @Moonwalker and me , "sharing" one cable on more than one receiver, we have problems with it.
@ccs, if the box has nothing to do, I don't put it into deep standby because of the booting time.
I remember old satellite receivers (not enigma) that had a configurable parameter called "LNB Power in standby" (ON/OFF)
As I didn't manage to turn LNB voltage OFF on a Uno 4K SE, I returned it to the shop, and now I have an octagon SF8008 twin S2X, which has Satdream image, openpli based, and works fine.