Altmans quote was that "it's possible that we will have superintelligence in a few thousand days", which sounds a lot more optimistic on the surface than it actually is. A few thousand days could be interpreted as 10 years or more, and by adding the "possibly" qualifier he didn't even really commit to that prediction.
It's hype with no substance, but vaguely gesturing that something earth-shattering is coming does serve to convince investors to keep dumping endless $billions into his unprofitable company, without risking the reputational damage of missing a deadline since he never actually gave one. Just keep signing those 9 digit checks and we'll totally build AGI... eventually. Honest.