The DSPs I've used address a lot of the concerns here -- fraud, what sites show your ads, etc. on top of what they do for optimizing spend, targeting, remarketi

The DSPs I've used address a lot of the concerns here -- fraud, what sites show your ads, etc. on top of what they do for optimizing spend, targeting, remarketing, and making your life easier. However, the article is treating the DSPs are a leeching intermediary. As long as the intermediaries are adding value, their existence isn't a negative and many of the intermediaries the author mentions aren't necessary.