No.5e's problem is that it doesn't teach new DMs how to run high level. It gives them the tools, but leaves the instructions for those tools out of the books and then wonders why new DMs are metaphorically cutting off their own limbs and the limbs of their players
The problem is 5e was written for a customer base that isn't it's actual customer base.
It provides tools and has a base system for high level that the people who do play don't want.
High level 5e was designed for half drunk, beer and pretzels, no serious derp play.