It seems like you've been doing this long enough that you've lost empathy for folks who are getting started. Pretty common for technical folks. OBS is not the most intuitive piece of software. For instance, "Scenes" will be new concept for folks. This was a great guide. Thanks OP for writing it.
There seems to be quite more to the article than that. Maybe if being critical of everything on the internet, the comment section may not be for you.
1. What does gatekeeping accomplish here?
2. Did you even read the tutorial? It does much more than just "stream your entire screen"