Your non-expert/non-specialist perspective is precisely what would be most valuable to me, a fellow non-expert/non-specialist. Your use case is similar to mine. You sound like you have a low threshold for extraneous BS that might nerdsnipe a prosumer, just like me. And when you say "fumbled my way through it" I hear "I dunno man, I just want it to work," which is exactly my viewpoint. All that means that whatever you might write would come at a subject I find intriguing from a perspective very similar to my own, and would therefore be more readily applicable to my interests, and probably require less flailing to make useful, than something written by or for "proper DevOps people".
No pressure intended, though, blog writing is work (unpaid work no less, for the overwhelming majority of people who aren't trying to make it their whole deal).