> However, it's a fact that they lead to more conversions, more signups and more sales.

I wouldn't jump to conclusions. Maybe you have expertise on this, I don't, but I've seen nothing that could make me lay a definitive conclusion like this.

The article incision is on the fact that some people needs analytics to back up evaluation of the web site trying to know if it's doing good or not, regardless of revenue. So you end up to those techniques that drives irrelevant numbers up, that can even damage potential revenue, but it's ok, you're doing the right things, look at those good numbers. You can't test such things with A/B testing or anything else, it's long term relationship with the audience, and those analytics are not measuring this.