True, but how often are candidates truly rejected because of non-technical abilities? I'd guesstimate that 75% of candidates are rejected because of technical abilities (didn't get design right or algorithm right or coding standard is poor, etc).
I'll give you an example:
1) Several weeks ago, an HN user referred me to a defense contractor position.
2) They asked me about three questions:
2a) "Are you more interested in back, front, or full stack?" (I don't care, but I lean toward full stack)
2b) "Do you think you could pass the background check?" (absolutely)
2c) "Why did you leave your last position?" (it was a contract)
I haven't received a reply since then. There was a similar incident with another referral, where the recruiter deemed me unworthy due to a "lack of Java keywords" on my resume.
The interviewing process is messed up at most companies. I did luck out with a contract (not the defense one mentioned above) position, I did pass their behavioral phone screen, behavioral on-site, and technical on-site. I only did well with them, because there were no recruiters nor HR involved in the process.
If you're wondering about my current situation, I am unemployed.