The role of quantum mechanics was originally to describe the behavior of individual atoms and molecules. This is the way of the Schrodinger equation or matrix mechanics, the harmonic oscillator, the hydrogen atom, infinite-dimensional Hilbert spaces, quantization, and so on. I would like to call it "hermitian" quantum mechanics since the Hamiltonian is a hermitian operator.

Then there is the quantum mechanics which describes engineered quantum systems like quantum dots and quantum logic gates. Here time evolution is in discrete steps, Hilbert spaces are finite-dimensional, and probabilities are discrete instead of continuous. I think it is apt to call this "unitary" quantum mechanics since one essentially only considers exponentiated Hamiltonians.

It is important not to confuse the two. If you know hermitian quantum mechanics then unitary quantum mechanics is conceptually straightforward. If you know unitary quantum mechanics then you will have a lot of new concepts and mathematics to learn before you understand hermitian quantum mechanics (but of course you may know more about applications).

The programs mentioned in the article teach unitary quantum mechanics: sufficient for engineering, insufficient for physics. If we assume that the engineering world is becoming increasingly quantum then it is perhaps not a bad thing.