> … they just make simple code which I can understand with a glance.

That locks the team into “as smart as me, but no smarter” and doesn’t really scale beyond very small teams and very rote work. One person rarely has all the ability plus all of the “on the ground” context that’s necessary to do great work across a larger system.

It’s more important IMHO to require devs to communicate what they’re doing at a design level, to help them set clear goals and define (and enforce) boundaries. Far too often I’ve seen seniors go nuts “fixing” a system that in some theoretical sense was broken but for all practical purposes worked just fine, while neglecting things that were truly issues for the organization. Note that this is primarily a management issue, mainly a lack of oversight and control.