Sure, in the open source world nobody owes anybody anything. And it is the responsibility of the user to choose carefully the libraries he is going to use.
But when asked, creators often refuse to delegate, add contributors with merge rights ... so the project is abandoned and of course the issues accumulate on Github. Or someone forks the project and make it his own then the cycle continue.
That's personally why I stopped using Coffee-script for instance. "J is busy" was often used as an excuse to let things rot for 2 years... except it's a fn programming language people depend on... so busy J needs to delegate or give stewardship of the project to someone who has the time ...
It's obvious to me that a corporation backed or foundation backed opensource project is always preferable to one lead by a single person that will sooner or later abandon the whole thing.