Older Developers

Author doesn't seem to understand why most people go into software engineering. It's because they are creators not managers.

Employers need to get what motivates their employees and put people in positions that enable those employees to pursue the things that make them happy.

And also recognize that what makes their employee's happy may be completely orthogonal to what makes the employer personally happy.

Passing judgement on those employees that choose to stay in position well into their 40s and 50s is just childish and shows a lack of perspective.