Thanks for your work on munin. I love it! And I appreciate your responsiveness here. Personally I don't care if my server wastes time generating HTML I never see. It's not enough work to make any difference. But I care a lot about seeing the HTML instantly when I want it, not waiting for anything to render.
I have a munin server for a fleet of a bit more than a dozen servers, and I'd be very sad if the ability to create a static site were to go.
That, and the ability to create "overall" charts (same metric for all servers in a group) as well as per-server per-metric charts is what keeps me solidly using munin.
But, I agree that for a couple of servers, the security it procures might overtake the performance boost.
Let's add it again: https://github.com/munin-monitoring/munin/issues/1395