Switch off Orion to bring battery to winter storage charge

I have an Orion 30 A DC-DC charger between alternator and cranking battery on the input side, and a 230Ah LiFePO4 battery on the output side.

In order to bring the charging level down to around a preferred winter level of around 50%, I wanted to switch the Orion to off.

However, the app gives a warning:

Charger will be disabled and battery will stop charging.
This is intended for maintenance purposes only.

Does this hold in my situation?

The only configuration I can think of, in which this could cause damage, is when there is no (cranking) battery between the alternator and the Orion. Then, the alternator wouldn’t have a reference voltage and could be damaged.