Most of this equipment did belong to the Afghan government so not exactly sure how much blame is deserved and who it belongs too.
That being said, none of this is going to have the top of the line specifications in current use in the US military. It shouldn't anyway. That stuff is not generally transferred to minor allies. There are reports some of it has already been transferred to Iran which is interesting. The Taliban probably has little use for it. They aren't planning on taking over anyone else and wouldn't have the capability of maintaining it for very long anyway. Spare parts will become an issue pretty fast, especially with the more technologically advanced stuff.
It was still a massive debacle.