Is the “concern” that LFLs undermine public library systems born out by any research? They’re so different from (and frankly don’t hold a candle to) public library facilities. It seems quite a reach to think tiny outdoor cabinets of random books will be the downfall of actual libraries. I’m much more concerned about book bans and defunding based on hysterical notions about librarians “grooming” young patrons.
It is up to individual LFL stewards to curate and maintain the offerings in their LFL. I check mine regularly, organize the contents and toss out books that are damaged, outdated, or toxic propaganda. People “book bomb” it frequently (cram it full of castoff books) and I distribute any quality overflow to emptier LFLs. I take excess children’s lit to LFLs near schools and parks.
But you know, I don’t have an LFL to try to do something nice for the neighborhood. I just have one because I’m a huge virtue signaling asshole obsessed with my image and hellbent on bringing down the robust local library system that I use all the time and support through mileages.
ETA is know this was the opinion of something in your background research and not what you’re trying to say here. I’m glad you enjoy your local LFLs and have a good grasp of where they fit in our communities.