A few years ago I was asked to present at an alumni event. Afterwards I met with groups of students.

It had been a very long day, and after the sixth or seventh group of students that met with me completed their "I'm the CEO, this is the CTO, this is the CMO, this is the COO... on, and this is our engineer" speech I looked at the CEO and accidentally snapped "Well, I guess you've learned an important lesson about how meaningless these titles are."

So I agree with you - the pretentious titles hold very little cachet, and not just outside the tech world, but inside it as well. No one is actually impressed at the zero-experience CEO of his own company until he proves something even in tech.