The best developers I've ever worked with tend to lack career plans. If you're sufficiently happy with your life that you don't need a change strategy, that's pretty cool.
Are you sure they didn't? Perhaps, like me, they have already finished their career plan and they are working their dream job.
That's the thing these interviews fail to take into account. They assume that everyone wants more, when that's not always the case. Happiness means knowing when you have what you want, and enjoying it.
The best developers I've ever worked with tend to lack career plans. If you're sufficiently happy with your life that you don't need a change strategy, that's pretty cool.