There is a difference between (A) a skilled expert who takes pride in their craft, and understandably goes with whichever employer appreciates their skills and compensates accordingly, vs (B) a middle-of-the-pack journeyman who just DGAF about their work and treats all jobs as equally disposable and replaceable (these are also the types of people who are likely to try out /r/overemployed, cuz why not).

We may all pretend to be more like type (A) employees, but in reality not everyone can be above average and there's a lot of (B) out there. As an employer, it makes total sense to invest in and pay more for (A)'s, but you're throwing money away to try and woo (B)'s or pretending like enough money will buy you better engagement or more motivation from them.