I have never had an engineering (or really any!) job where learning on company time was absent. A lot of people like to grow and a lot of people don't. And a lot of the latter realize their waning usefulness and how they're one algorithm update away from being obsolete so they put time and effort in to masking that.

I enjoy being the dumbest person in the room. Others find it threatening.

And for those who are so busy outside of work that they can't grow inside of work, I feel for them because that sounds like an exhausting life.