In principle you're right, but there's an important distinction:
Maximal entropy corresponds to a uniform probability distribution.
It's the configuration where we have lost all information, i.e. are most clueless.
To elaborate on this, the Schrödinger equation, which describes the dynamics of a single particle, is a wave equation and hence a lot of classical intuition from e.g. electrodynamics can be applied.
It is many-body systems, i.e. systems composed of many interacting particles, which is not only mathematically complex but can also defy classical expectations due to emerging phenomena, etc.
In principle you're right, but there's an important distinction: Maximal entropy corresponds to a uniform probability distribution. It's the configuration where we have lost all information, i.e. are most clueless.