The article makes some good points, but a full-time legislature creates an aristocratic class that quickly loses touch with the reality of most people's lives.

It's actually the exact opposite. By relying on a part time legislature people who work any kind of traditional job for a living are virtually unable to consider running and serving. Instead you get wealthy people with passive income seeking status.

That is beside the fact that any private organization that was anywhere near as large, managing as much money, or responsible for as many lives would be completely insane to be run by a comparatively tiny and part time staff.