How do you feel about being a full stack developer?

I have seen a lot of positions about being full stack with a polyglot mindset. One of the full stack positions I worked for was almost always frontend with little backend work. I acknowledge it's a great way to learn as well and not everyone's cup of tea. But isn't this a clever way companies have got to churn more work from a single person while paying almost the same as a backend or a frontend dev?