This will put a huge amount of projects into trouble, so I'm confident the community will come up with a solution.
But here's one thing I'm wondering: with LLMs being now super-human when it comes to algorithms and computer code, wouldn't it be possible to set up a "project super-harness" for a TLS client library for (not necessarily mbedTLS main branch!!), put up a constant "pool budget" between various individuals and organizations, and let the LLMs care for ongoing maintenance?