Two points:

1. There are lots of digital ad tools that have great ROI. No one clicks on ads....until that one time they do. Critics of digital advertising like to hone in on anecdotal examples of online ads failing to support their points. This blog post is a great example of that.

2. Your second point is why Madison Avenue was so horrified by Google when they started selling ads. Tracking the performance of each individual ad was so scary they couldn't fathom it. Online ads are no worse than offline ads, we're just able to measure online ads in ways that we can't with offline.