I do expect to see a unified model interface for regular ChatGPT and similar tools this year (especially since sama has been talking about it), but for more technical tools that have various models I'd like to keep the choice overall, at least for right now.
It's also a fundamentally untrue belief. It discards the fact that different tools have different usages, and it fundamentally says that users do not care to exercise taste, either. (Because "which model" is also a taste function)
The lens I wish UX would take is "how can we make this concept more useful/lower friction" instead of dreaming of annihilating it. That's fundamentally the DWIM dream, and it never works.