This has absolutely not been my experience, at least for well designed cloud infrastructure. High availability doesn't have to be complex or hard to understand.

This has absolutely not been my experience, at least for well designed cloud infrastructure. High availability doesn't have to be complex or hard to understand. In most cases, automatic failovers and restarts on well designed architecture fix problems with zero end-user impact. It happens so seamlessly that my standard procedure these days is to fail over infrastructure if I want to restart it.