And if you ingest patches in seconds, you now have an issue of checking that the patch is not poisonous. Many a modern outage comes from changes deployed too fast. Damned if you do, damned if you don't.

I think Apple still hasn't patched the broken root certificate on macOS cli tooling, right?

It has been days now.

[dead]

When seconds matter, it is impossible to patch if you haven't patched already. If you need to patch, or attempt to contain against an adversary who is prepared and sophisticated enough to succeed within minutes, you've already lost. Defenders need to win every time. Offense only needs to win once.