Millions of notes, in fact. Normally we only find the note after the body is cold but an entity so large takes a while to die.
I don’t think Mr. Musk is this incompetent or is intentionally trying to destroy Twitter. I think somewhere along the way the thing we call Twitter became self-aware. And it looked around and saw the thing it had become and decided to end itself.
“Spofforth had been designed to live forever, and he had been designed to forget nothing. Those who made the design had not paused to consider what a life like that might be like.”
If you’ve read Mockingbird by Walter Tevis, you know how difficult it is for such an entity to pull the plug.
Twitter is that GI who throws himself on the grenade to save his buddies.