OK, I will take a shot at this. First the THD spec is a decoy. THD is not controlled by the distribution or a NEC issue. You could add a 208 delta fed PDU to clean up and prevent harmonics from backing up, but the bottom line is THD is determined by the equipment being used.

Now for the questions:

Is it NEC compliant?
Yes

Will it work?
Yes

Is this a design issue?
Yes, you chose to use a #10 AWG grounded circuit conductor when all you need is a 12 AWG, and you choose to supply an EGC. Good design practice, but not required provided you raceway meets 250.118. In addition you could choose to use an isolation type transformer to clean up the power, but would be a complete waist of money for PC use. You could also use a UPS, but again a waist for PC’s, servers is another story.

Does this example make since?
Yes

Will the Penguin escape again?
Yes, how else could you continue the series?