Earlier quoted context omitted.
That sounds nice in theory, but the reality is also that a lot of more permissively licensed (BSD / Apache) projects now cannot use (most) parts of Grafana / Loki / Tempo anymore, since realistically they won't be able to or want to switch to the AGPL as well (because of all the pain that would incur on others, in turn). That means that basically the whole free code sharing idea goes out of the window, at least in on…
That's kind of the point. The purpose of MIT/BSD is to enable nonfree derivative works; the purpose of the AGPL is to only allow free derivatives. AGPL maximizes freedom by prohibiting further restriction of it; it's a local maxima of "user freedom" as a function of "developer freedom". If you want to use AGPL software in your project, you're free to relicense under AGPL.
And this condition is the reason that the answer will be "no" every time to using copyleft. Why would anyone ever choose a piece of software which, however you want to twist words, is actually less free in the sense of what it permits and will have less adoption as a result?
I run some websites without ads used by thousands of people and I never intend to monetize them, but I would still avoid these projects solely due to their licensing.