Ain't nothin' in the RAW that states a sentient pile of dust can't play basketball.

OP you appear to be committed to (not) dying on this hill and I applaud you

A disintegrated creature and everything it is wearing and carrying, except magic items, are reduced to a pile of fine gray dust. The creature can be restored to life only by means of a true resurrection or a wish spell.

Why would you need to be "restored to life" if you weren't dead?

You're not dead when you're petrified, either, which can lead to some pretty interesting exploits, rules-as-written.

Petrified creatures count as creatures, not objects, so rules-as-written you can determine if a statue is a petrified creature by trying to target it with a spell that requires a creature for a target.

With the cantrip Poison Spray, you can check for petrified creatures without using spell slots or risking damaging the creature, since it would be immune to poison while petrified.

My sister played a campaign as a sentient ham sandwich. She would love this.

Edit:

Lmao 🤣

I'd like to imagine that this is how non-necromantic sapient undead creatures are created, someone has all their flesh incinerated away but somehow their soul clings to the bones, and bam sapient skeleton.

In this case it could result in a poltergeist, which uses the dust to interact with things.

I see no flaw in this argument. Instead of dying, the character exists like the guy from “One” by Metallica, desperately waiting for a stiff breeze to end his existence.

The spell specifies you turn into gray dust. Unfortunately gray dust has no listed stat block.

Luckily it is mentioned in "Tales from the Yawning Portal", "The floor of this room is covered with a layer of fine gray dust and ash, three inches deep."

Based on the rest of the description you are restricted to the room in which you turned to dust and the only action you may take is casting " Minor Illusion", with the added restriction of all illusions must be humanoid.

that's a lich that travels with his phylactery

Get the feeling it would be difficult to have a dust based strength character though. Hard to hold weapons/make attacks with them as dust.

Maybe wizard?

Fine dust does not have the consistency of chunky salsa, so it checks out.

Probably should go join the Thousand ~~Suns~~ Sons. They might set you up with some nice power armor.

AI GM be like: "Yep. Seems legit."