It is nice to have a model that can "do it all", though. And surely that's still the end goal? Like how MoE is still somewhat popular in certain areas even after its heyday.
I am wondering if models will end up being some sort of evolution of MoE where it has something internally like the model the author refers to that gets surfaced when it needs to search in some way. I guess it makes sense; our own brains have so many distinct task-specific regions.