Here's a depressing take.

Most places I worked at, seniors were expected to do the junior work, only faster. All the actual senior stuff (architecture, refactoring,code quality, you name it) is usually done either against management or as a concession to humor the devs.

Now that our ability to go fast has been supercharged, I suspect we're just going to see a massive lowering of quality across everything. We seem to be already seeing it in windows, osx, iOS, azure...

Either the market stops accepting that lowering and we see a counterpush, or people become content with 97% availability. Considering how normalized it is nowadays to have data leaks, I think the frog's already half boiled.