Aww man, what's with the trend in bemoaning the presence of technology in kids' lives as some form of 'corruption of childhood'?

It's not a corruption of childhood, that doesn't mean anything -- it's just unhealthy.

No, kids do still play with legos. LEGO is doing pretty well, they're on track to hit $4 billion in revenue this year.

This is just an educated guess, but LEGO makes most of its money off of kits and things like Star Wars X-wings. This isn't a bad thing necessarily (witness the OP), but the problem is that you make one of these once and then set it on your shelf (they're also stupidly expensive, which explains the revenue mark). What happened to the entirely unthemed sets of traditional legos that you could build into anything you wanted? It is my observation from witnessing my own young relatives that these either don't exist or aren't popular anymore.

Yeah computers, smartphones, and iPads are becoming more and more ubiquitous. Kids are going to grow up with them. The key, I think, is involved parents that ensure their kid has a healthy and active environment.

This is a blatant contradiction of your first sentence. Yes, kids need healthy and active lives -- what prevents them from having them? I don't know, what common "toy" do many children have these days that is neither healthy nor active? An iPad/computer! So yes, I will continue to bemoan the presence of what you loosely call technology in young children's lives.