The way in which you shoot down something matters greatly.

When I saw phoneblocks, I was instantly reminded of designers who work without regard for their medium - a great concept with zero thought given on how to make it a reality, or even awareness of the compromises the medium will inevitably impose. If you're a front-end developer, at some point you were probably given an awesome-looking PDF, then expected to make a website/app that is a 1:1 representation of it. Of course, that never ends up happening and you have explain why it could never be a reality.

I'm really excited to see where this goes, but whatever it ends up being, I can guarantee you it won't look much like that phoneblocks video.