Sure. But none of this is about that. And I somehow doubt that'll be the path towards AGI anyways. Does any combination of narrow abilities become general at some point? Is the sum more than it's parts? I think so. Especially with intelligence.
And MoE comes with the issue that it can't really apply knowledge from one domain to another. At least if you separate the subjects. Whereas I as an general intelligent being can apply my math skills to engineering, coding, doing a plethora of every day tasks. So I'm not sure if MoE help with that.