Disclaimer: this is purposefully obtuse.
Other effects in the game which explicitly state they kill you:
Shadows, succubi, massive damage, death saving throws, beholder death ray (notably not even their disintegration ray kills you), power word kill, vampires, mind flayers, night hags, drow inquisitors.
Clearly, if they intended for disintegration to kill you, theyβd have said so. Since specific overrides general, and there is no general rule that disintegrated creatures are dead, I rest my case. QED.
My sister played a campaign as a sentient ham sandwich. She would love this.
Edit:
Lmao π€£
Iβve never played DND so I donβt know if this is something you could pull off or anything but Iβd probably be like
βI snort the fine pile of dustβ and then, I donβt know, thereβs some latent personality or intention there, so now we have to alternate playing my character between turns/minutes or something. Itβd probably make for some great RP moments, especially if each personality couldnβt remember very well what the other was doing previously. Maybe the class and abilities change with each person, which makes arming up appropriately interesting or a pain depending on how we handle it I suppose.