If you decide to scramble up a ridge to get to a peak that you know you CAN scramble to, which others have scrambled to, and there are certain-death falls on either side, you are taking a risk. If a rock breaks away under your foot and you fall to your death, well, it would appear that the risk equation has worked out against you this time. Did you fall because you're stupid? No. You knew what could happen. I find it unlikely that Chris wasn't conscious of the fact that starving, freezing, getting sick or being eaten by a bear, among other things, could result in his not coming back out of "the wild."
Sure, Chris could have been better prepared in a couple ways, and everyone who makes a risky scramble could test each and every rock by tapping it with a hammer as they ascend. They could even wear parachutes. No one does, so no one thinks it's stupid not to do so, even if people do die from time to time. That's a conventionalized risk. The risks Chris took were relatively unconventional. I feel this factors largely into the crowd of people who just can't help but denounce him as "stupid." Feel free to make your own decisions with your life, just as long as you're doing things the same way as the rest of us...