I think you're projecting. The whole point is reminding yourself that your firewall probably isn't as secure as you think it is, just like everything else in your network. This practice doesn't mean ignoring the simple things, it just means thinking about security holistically, and more importantly: in the context of actually getting crap done. Regardless, anyone who thinks keeping their stuff up to date is some kind of panacea is a fool.
Personal attacks are for those who know they've lost the argument.
Keeping stuff up to date is exactly the kind of "simple thing" that no amount of sophistry will replace; in practice it has a better cost/benefit ratio than any amount of "thinking holistically". Those who only their things up to date and do nothing else may be foolish, but those who don't keep their things up to date are even more foolish.
