It's all reasonable advice, but the fact this this blog post exists also demonstrates how terrible flying has become. This is why I fly as little as possible.
I used to hate business travel, then took a role that required a fair bit of it. Getting used to the routine, finding ways to be efficient, and realizing that even the occasional irregularities aren’t so bad gave me a perspective that while I don’t love it, it’s far more tolerable than how I used to view it.
Still, as you say, some bad travel stories with delays and missed connections but you're better prepared to roll with those punches.