I don't think semantic debates are very worthwhile, but in my mind a system that collapses is completely non-functional, not partially non-functional. A system

I don't think semantic debates are very worthwhile, but in my mind a system that collapses is completely non-functional, not partially non-functional. A system that is choosing which patients to treat is therefor not collapsed. Similarly, a bridge that has collapsed transports zero traffic - not 50% of the traffic. But again, venturing into these semantic debates isn't useful. People choose hyperbolic words in order to justify their preconceived conclusions. The hyperbolic adjectives themselves aren't the point of OP above.