Of course. It's a useful feature. My point was that a simple misunderstanding by a front end person "Oh, this will make our site load faster" could actually take down a site.

I hope that it makes front-end and back-end people more aware of how they're connected.

But you are right. Often, "dangerous" things, when used responsibly, can be good.

Which is probably why he didn't say that. The article has useful information and cautions people to think through the consequences before using the feature. It doesn't claim, at any point, that the feature will hurt the users.