Everything should be made as simple as possible, but not simpler.
Solutions should be made simple enough for their intended audience to be able to use them, but not oversimplified to the point where they become an illusion.
If the solution is more complex than the problem it intends to solve, both the problem and the solution need to be better understood.
The genius of Event Storming is that it allows to clearly and visibly see the problem and align it across a team as big as 30 members within a collaborative workshop.
Once that is done, the development team finds the architecture almost layed down and ready to implement.
It also aligns business, specialists and code around the same language; The business language.