Id say that these forums are dominated by people with too much time on thier hands, a group where the underemployed are probably overly represented.

Knowledge does count in a non-saturated market. Only where there are thousands of qualified applicants do the interviews count for so much. My new job required two interviews, and one of those was basically just about making sure i wasnt a felon. There were aptitude and medical checks, which took months, but none of the extensive "culture fit" sillyness.