Just came across yocto (https://www.yoctoproject.org/), then after a few clicks bitbake, and the more generic openembedded and embedded-linux.
Even when these topics are going heavy-weight, they seem to discuss about configuration/make files, but often they're just about file systems, storage partitions, various USB peripherals, hardware in general, problems with working from the command line. Also with a read-the-documentation-for-me-pls vibe, as most questions are coming from new/newish users.
While yes, I'm aware of that software tools commonly used by programmers are legit topics, opening the 50 most recent Yocto questions just doesn't feel like programmers dealing with programming-related problems. Less than 10% seems to be on-topic to me. It can be a me problem, but in my opinion this policy may be used too leniently here. When someone runs into a superuser or unix/linux question, that might not automatically transform into an SO one even if they happened to use a tool which no non-programmer would ever hear about.
Apparently there is/was a concept of tag warning, which could be used here, though I can't even find out if it still exists (random attempt to create a seo-question doesn't produce such warning to me).
I could go on a one-man crusade any time, just that's not really a lasting solution. If there's a problem at all, of course.