Just because something exists doesn't mean it's ubiquitous.
I have this really annoying reoccurring problem where I tell people there are modern and sci fi technology exists in my setting, and there are still people who use things like slings bows and primitive technology. They seem to not understand that just because something exists doesn't mean it's easily accessible and ubiquitous.
Yes modern internal combustion engines exist alongside hover bikes but people still use riding animals because not everyone has the infrastructure required to maintain or fule a car.
Yes, people are aware of how to forge steel, but once again that requires a certain level of technology and infrastructure and it's much easier to make tools/ weapons/accessories from spent brass and old copper pipe. And knapping stone is still viable.
Just because it's a post-apocalyptic setting doesn't mean everyone has to run around looking like it's mad Max. There are people with basic looms and creatures with wool that can be harvested to make new textiles.
Yes people wear half plate armor as a viable form of protection it stops buckshot and crossbow bolts just fine.
Does anyone else have this problem? Is this making sense to anyone?