I always feel discomfort when this gets parroted. It's clearly not true, unless you're willing to shift the definitions of "idea" and "execution" around after-the-fact.
Indeed the article comes to the conclusion that the idea is near-impossible to execute – due to realities within the business domain of healthcare. If the idea was "nothing", good execution could've fixed it.
My greater point is that ideas set the boundaries for what's possible in execution, which in turn means ideas are critical. If they were unimportant a shit idea would have little impact on the outcome, which is clearly not true. They could still be "overrated" though, but then we should use that language.
Yes, my original post was not verbose, but I think people are better served by hanging signs all over their start-up that say what I wrote. Ideas are fun, ideas are hopeful, ideas can be magic, ideas can fill your heart but success comes from out-working everyone else. I have several truly great company ideas but I've never started them because I know in my heart that I don't want to go do all the work required to make it success.