Arturia may have an official line on this which overrides our opinions, but from my experience, most electronics of all kinds suffer the most wear and tear by being turned on/off/on/off and suffer less if you just leave them on. The only exceptions are things like CRT VDUs, LEDs, motors, etc, i.e. things that have a fairly predictable lifespan or which just physically wear out.
We had a huge network server at work which worked faultlessly for 15 years, never ever turned off from day one, then one day the building was powered down at weekend to allow for the 'umbilical cords' to be cut between our building and some adjacent buildings that were being demolished. Server went poof when it was powered up, all the smoke came out of it, never to work again.