Not the parent, but -- in my experience -- many libraries from the community were written by enthusiastic amateur developers. Finding ones I enjoyed using was very needle-in-a-haystack.
Along with that, a lot of the libraries (from what I could tell) put all the code in one massive file in a forum thread and update it from there, making it pretty time-consuming to keep up with changes.
That and there's no consistency between libraries as far as how they decide to use classes.
My solution to this was to not use any of them. The LÖVE APIs are pretty sane, so using your own tiny wrappers is not much work compared to dealing with the libraries.
One recommendation: https://github.com/kikito