My reason for saying it was cringeworthy and out-of-character: Even if he saw himself as a ticking time bomb of potentially "apocalyptic" proportions, I don't think Jono's the kind of guy to consider killing himself, not after all he's been through in Generation X and his solo mini. Those stories were all about him accepting himself and he'd finally done that.
But, hey, maybe being depowered, made completely helpless (relying on life support to survive) and kidnapped by a cult shortly thereafter messed with his head enough that he would eventually consider it.
The point I'm getting to, in a really roundabout way, is that after New Warriors, he'd gotten to a point in his life where he was okay with his new reality. And I'm sure being whole again, gray or not, was great for him (especially since Frank Tieri never got the chance to go to the dark part of his Apocalypse, Jr. storyline that he hinted at, at the end of the Cult of Akkaba story in Excalibur).
So, he'd probably view it as a bad thing now. But hey, that's just my take on it. Jono's always surprised me (pleasantly so, most of the time), so I might not have the best handle on his character, lol.