It's not (just) old age.
I think that there is a confluence of factors that has made things worse recently. The two most notable are pretty obvious-
1. Employment issues. While these can vary from place to place, the simple problem that we've had recently is that a lot of employers in low-margin industries (such as service industries which are customer-facing) have struggled to attract workers. It's a combination of all sorts of factors, from low pay to people not wanting to work those types of schedules (which can be erratic).
Apply basic econ 101 to that- high demand for workers, low supply, means that a lot of places are understaffed; moreover, many businesses will hire people, and retain people, that they might not have hired or retained previously.
2. COVID. Without putting too fine a point on it, COVID wrecked the ability of a lot of people to interact with each other in groups. From airplane rage to throwing things at concerts, you're just seeing more anti-social behavior. That should subside.
That said, don't discount old age as well. We have too few lawns, and too many people on them.