It’s because just about any blog / articles out there that one can google is very much biased towards HA and for sure, obviously written by HA users. Obviously an OH user wouldn’t be recommending HA over OH.
So as a new user just doing some “research”, you’d end up choosing HA because every article you read say that HA is the better one, why would you bother with OH.
It’s kinda the same as to why Python is so popular even though, well…
We need more articles from the perspective of OH users, explaining why they love OH.
I’m not a writer, I don’t even have a personal web site of my own, so unfortunately I can’t help much with this
When I first started to look into home automation back in 2018, I came across a youtube video that recommended openhab. But even then, I started by trying out Home Assistant and honestly found openhab a bit too hard. My memory could be wrong, but as I remember it, with HomeAssistant, my 2 pitiful “smart” devices were instantly discovered and displayed on the front page of home assistant, automatically, without my having to set up or “add” anything. I had absolutely no idea back then but at least with HA I could start “playing” with something. So I tried to stick to it for a while until eventually I found how extremely annoying Home Assistant was and how extremely limiting it was. It is night and day compared to what can be done with openHAB despite back then having to use RulesDSL. Today with modern JavaScript and the elegant JRuby, plus MainUI, I’d say openHAB is in a much better position to gain new users, so it’s back to marketing.
Also maybe the moral of the story is to turn on autodiscovery and auto add everything, not just to inbox, but obnoxiously create Things / items as a default, just so first timers can immediately have a play with their devices. That should pique their interest to learn more. Then have a “Wipe everything out, disable auto creation, and start afresh” button LOL.
Or maybe call that “Beginner mode” or something and offer to turn that on during “first-time installation wizard”