Some of that makes sense. But I think it is more basic. #1, don't just not hire older workers. The current reality is that once you are a tech guy over 40, you are less employable, and it gets worse as you get older. #2, have the idea that work doesn't have to mean 18-hour days at the office and there is such a thing as part-time - that is a big mind shift for a lot of tech shops.
Personally now I'm out of the workforce and doing part-time contract gigs. I am very fortunate to find some that will take me on part-time (helps if you are billing a hefty hourly rate: they think twice about eating up all your time). My other personal rule is that I don't do Scrum: I did it for years, I hated it, and two week cadence with daily standups assumes you are there all the time.