They only loathe the security industry because they feel that those in it are incompetent. You say "effective promoters", they would reply "promoting what? the illusion of security that security companies give?"

I think their other point makes a lot of sense - It's in the security industry's interest, to keep things insecure.

Just as it's in the anti-virus companies interest to keep the threat of people getting a virus high. If no one ever got a virus, no one would buy anti-virus software.

There will always be new software, and software is insecure by default. You don't have to avoid securing the software that already exists to guarantee that you'll still have a job in the security industry tomorrow.