Yeah I think the real thing is just not understanding how bad a cold without an immune system would be. IE only real way to put it in context is, read up on what an immune-comprimised individual goes through when they get a cold.

It’s a bit like saying

“why is my countries missile defense so crappy, whenever we’re attacked there’s chunks of metal all over the ground, so much smoke and noise it makes it hard to sleep, why are we so bad at defending from missiles”.