You’re mostly right, libraries thrive by adapting to their surroundings. Mostly.

But after just months of being unmaintained, even the best libraries start to rot away due to bugs and vulnerabilities going unfixed. Users, AI included, will start applying workarounds and mitigations, and the rot spreads to the applications (or libraries) they maintain.

Unmaintained software is entropy, and entropy is infectious. Eventually, entire ecosystems will succumb to it, even if some life forms continue living in the hazardous wasteland.