The phrase “executive summary” is strange.
“Oh, you’re the most important person? You only need to read this. Everyone else: Go ahead and waste your time with the full thing!”
Why should only executives be spared the task of reading fluff? If the important, power-wielding, DECIDER only needs to read a few paragraphs to get what’s going on, that should be enough for everyone else too.
Sure, the real context of these summaries is usually “If you don’t have full bandwidth right now, read this.” But if that’s the real meaning, why not have a title which accurately reflects that?