Reducing the mental load of a programming language has nothing to do with how "smart" anyone is, it's about making everyone more productive. Otherwise, the smartest programmers would all be clamoring to use C++.
Now flexibility certainly comes with a cost: there's just that much more you need to understand about theory and architecture to be able to account for all the different code permutations. That said, it also allows for those who dedicate themselves to programming as a science to write exceptionally and more productively.
I would say Go raises the average productivity compared to more complex languages but dramatically caps the upper bound as well. Whether that's good or bad is as much philosophical as practical.
Productivity during creation isn't worth the cost of maintenance later. At least, not the psychological cost.