From my POV (30 or so years working on the same FLOSS project), AI isn't "destroying Open Source" through an effect on contributions. It is, however, destroying open source through its ceaseless, relentless, unabatable crawling of open source git repositories, commit by commit rather than via git-clone(1).

Project after project reports wasted time, increased hosting/bandwidth bills, and all around general annoyance from this UTTER BULLSHIT. But every morning, we wake up, and its still there, no sign of it ever stopping.