You must be from the species that can predict each and every report before it's needed. Good for you.
Also, I didn't claim that I don't use reports known in advance; I do use them. But there are cases when preparing such a report for just seeing one trend is an overkill, and there's still troubleshooting that is helped by the query language. Your defined-in-advance reports don't help with that.
> I spend what time I can trying to show those very same sysadmins you’re talking about why ES is a poor architecture for log work, particularly at scale.
OK. What works "particularly at scale", then?
Also, do you realize that "particularly at scale" is a quite rare setting, and "a dozen or less of gigabytes a day" scale is much, much more common, and ES works (worked) reasonably well for that?