Altman didn't say that. In March 2021, he did make some predictions, but they were much vaguer and farther out:
> In the next decade, they will do assembly-line work and maybe even become companions. And in the decades after that, they will do almost everything, including making new scientific discoveries that will expand our concept of “everything.”
To add onto this, I feel like this has been happening a lot, where critics project backwards imagined claims or go nutpicking for random comments online to make something sound absurd and like everything is behind schedule and nothing is materializing, and then you can see other people (not necessarily the same people, the point isn't "look at these hypocrites") saying that it's all moving too fast. Both of these can't both be true in their strongest forms. I think what they have in common is that because they're relative measures to an unstated baseline, they're free criticisms you can throw at any development whatsoever, regardless of what is or is not turning up.