Uses proctoring services to administer what appears to be an exam, as if a college education or my experience is not enough to test my ability to solve problems.

Lengthy assessment that took about three hours. Seriously, how is this even legal?

Nevertheless, in spite of having to be recorded during the whole thing, and getting potentially nothing out of it, as I feared, I followed all instructions and solved problems as they requested. Met the team.

Then, after all this, rejected.

Unprofessional waste of candidates' time. Very disappointing experience.