My old boss would give one of the newer/cheaper people a task and they would flounder for months on it. After about 3 months he’d ask me; I’d have it done and back to him in a couple hours. This happened countless times. While I get paid more than them, 2 hours of my time is cheaper than 3 months of their time… not to mention the value of faster turn around.
There are also many problems I can see coming and avoid, because of experience, where a younger person has a good chance of hitting the issue head on.
You’re also talking about hiring. I have a job and can keep it, assuming my mind and fingers still work. I’m not planning on interviewing much. That said, I did have a FAANG reach out to me just last week. I wouldn’t call myself old and gray yet, but I have aged into the protected class.
As a hedge, I save my money and keep my expenses low.