Today Quantum mechanics is "non-mechanical" theory.

[socratus]

In this case, we should rather speak about a "configuration" than about a "shape".
Such final configuration corresponds to the state with the minimum energy,
ie, after all, the most probable arrangement
(of swirling "stem" elementary particles)...

Not bad . . . I like . . . . .
. . . . quantum particle has a "configuration". . . . . .
. . . . but in "the state with the minimum energy, ie, after all,
the most probable arrangement " of quantum particle . . . .
. . . . can be only flat "configuration".
=.

Sorry, not "has a configuration..." but "is a configuration (of physical space)..."

. . . . no matter . . . . .
a) it is a configuration of cloud in a physical space
b) configuration of physical space with the minimum energy has flat configuration
=