Let Drop Shadow effects ignore each other
In Photoshop we can have multiple dropped shadows be applied to a single object, and they all get layered upon each other. It gives users flexibility to use different colors, densities, feathering, etc.
In Illustrator, on the other hand, the Appearance works differently. Each new Drop Shadow get applied to the previous dropped shadow. The larger the blur is, the more useless the next shadow gets.
To get a layered shadow the same way we do it in Photoshop, we have to apply each shadow to its own fill.
Shadows in Ai work differently from Ps.
Each shadow in Ai applies to the stack above it. It means that you first shadow will cast second shadow.
This is 'as intended', and at least allows to trick Ai into making soft shadow, layering them.
But this should be optionable, I agree.
I'll make it into the feature request (which means it won't be picked up in the next 5 years).
Applying multiple drop shadow effects make them being displayed inconsistently.