>but here's the thing: people come from different backgrounds. what's obvious to me after building the thing isn't obvious to someone installing it for the first time.

Sure, but you're also not obligated to do... well, anything. And people are also allowed to read documentation and code and put in the effort to build and install things themselves. What happened to the oldschool hacker spirit that rewarded learning and helping yourself? If you show up to a group of people and say "how do I make this work?" while showing zero evidence that you've actually done anything, you'll be politely told to fuck off. I promise it's okay to say no to people, especially people who haven't demonstrated that they've put in their own time to understand something.

But this is immaterial anyway. I don't know how to better explain that you don't owe your time to strangers on the internet, some portion of whom are probably not even human. Alternatively, you could get them to pay you, especially the organizations "behind corporate proxies". If they can afford a corporate proxy, they can certainly afford your time, as long as you value it appropriately.

So yeah. Stop working for free, and stop treating every last internet stranger as relevant.