Hey George
Welcome to the forum 
I used various agent frameworks quite a lot. I’m kinda developing something in that realm, but I’m actually exploring an anti-agent approach. Anyways, that’s not the point of the topic.
As I myself faced quite a few important issues with the existing agent frameworks I was curious what others are thinking.
I wouldn’t say they don’t work as such claim won’t mean much to me. They work like magic for some things (personal assistants in some tasks), but are definitely poor in many others.