Why does Bialetti says to avoid using dish soap to clean my new Venus?

I just received my new 2 cup Bialetti Venus and immediately washed it under running water with mild dish detergent and a sponge, since it’s all stainless steel and new.

The instructions say not to use it and only rinse with water.

What’s the reason for this? It’s just a copy paste from the aluminium moka pots user manual? I always washed my other stainless steel moka pots when they were new with dish soap, nothing happened. 🤔

Also, while I’m talking about this moka pot: it’s 100% E&B competition filter compatible (2 cup size with OEM Bialetti gasket) and the bottom boiler is magnetic, works on my portable induction plate.