"You're saying Apple quickly responded to an serious problem and that's a bad thing?"
No, he's deriding Metavisor's claim that Apple don't release software until the serious problems are all fixed. There obviously was some kind of serious problem in iOS 5.0 because as you say, Apple responded to it, so that claim is easily falsified.
By the way, one of the big selling points of Android devices over iOS is that if you don't like your version of the OS, you can install a different one without voiding your warranty. If you don't want to go into such technical depth then that's OK - I haven't done it myself - but the option is there if you want it.