This is a common thread with editors, too. Every time I take on a fiction client, we end up talking about brevity. Their blurb is too long, their summary is too long, their first chapter is too long; agents only read queries they can get through.
Anything coherent can be summarized. If you can’t distill your idea into something brief, if the concept only “works” when you frame it in sixteen layers of unneccessary context, it’s broken.
And most of the time, it’s broken because they like their idea too much to look at it critically. They’re too focused on “being an entrepreneur” (or “being a writer” in my case) to do what it takes to get there, and they end up wasting everyone’s time along the way.