I know what you mean - I am from that era and a lot of people were ripe for the mystical teachings of ki, and there were those that exploited that for their own benefit. Unfortunately, that gave Ki a bad name and turned people away from understanding how true ki is an integral part of developing a coordinated mind and body; which is a core requirement for establishing soft power in the internal arts.
Just my opinion...
Ahh, come on, be fair, a lot of people were also ripe for machokido. Come to think of it, a lot of people are always ripe for something......