I work at SAP. I'd say we're
pretty neutral on age - I work with people 20 years younger to 2 years older than me.
I think I've put in maybe two 40+ hour weeks in the past 5 years. I manage several devs and I hate dashing the younger (or ambitious) ones' dreams of resume driven development. My team handles a legacy system that neither crashes frequently nor needs extensive refactoring. "Sorry, cutting up and containerizing the system and using Kubernetes to deploy isn't worth the headache."
I know I'll keep getting promoted (and so will my reports) if I make sure my manager doesn't get calls from his manager asking why there are service outages.
Things move very slowly on purpose. It's better to miss delivery dates than to get bad press or run afoul of laws (which begets bad press).