> More broadly, it's kind of sad how little actually came of the "Maker Movement"

I'm not sure I agree. However I do believe the "Maker" movement was over sold by O'Reilly media and Dale Dougherty in particular. I stopped subscribing to Make Magazine few years back when it became apparent it was little more than a print version of Hackaday or Instructables.

Regardless of Maker. There is a plethora Robotics Competitions, existing Hacker spaces and STEM is huge.

The number of kids that were going to tinker at home is a fairly fixed. Where we'll really move the needle in terms of more people getting into engineering is in formal education (inc Robotics competitions).

Disclosure: I'm a little biased, I help design and build IDE's for some of these comps, e.g. http://zerorobotics.mit.edu/what-is-zr/ but I also have advocated and help implement "maker spaces" in my local school system. There is a sea-change, so I'll push back on the idea that little came of the 'maker movement'