In the sense that some people won't have an idea of what's going on, this community altogether isn't particularly inclusive at all. Personally, I really don't want the topics this site covers to cater to a lowest common denominator, and I'm sure that isn't what you had in mind either, but that's the effect of taking "more of us" to mean more than you personally.
Personally I don't see anything wrong with suggesting to add a few hints, but the basis of that suggestion in this case was that "there's a lot more of us who could probably get the joke" with the hints. If making it approachable to more people is inherently a good thing, the logical conclusion is to make it approachable to everyone.
With code like this, the readability obviously isn't a high priority consideration and sometimes the exact opposite of the goal, with the impenetrability sometimes being part of its charm. This is Hacker News after all, and if your reaction to of a piece of code that describes itself as "an exercise in minimalism" is to leave a snarky comment about the lack of documentation, you should probably check your news elsewhere.
If you have any interest in the subject, the initial comment "just enough features to allow self-compilation and a bit more" should give the purpose of the code away. If not, it ought to have been a clear sign of dragons.
Actually, a lot of us probably don't understand what this is doing. I sure don't, but I really don't consider myself "lowest common denominator" either. I come here to learn, to be honest!
My point isn't that not knowing what this does makes you a lowest common denominator. It's that most stuff that is shared on this site at least borders on being what I'd call esoteric, and if making each individual submission more approachable or catering to a larger general audience is a goal of this community, it isn't really going that way. If it was going that way, I doubt the community would be particularly interested in this site.
This submission in particular has dubious practical use, and the description, "an exercise in minimalism", is telling of a sort of artistic intent. If you don't understand what it does, how it does it, or if you don't like it, it won't lower my opinion of you in any way, but its inclusion on this site is part of why I like to come here every now and then. I get to discuss subjects that relate to my work and hobbies, but I also get to look at weird alien code and think hard in unfamiliar terms. From what you are saying, I think you can relate.
Personally, I could glance over it and get the idea that it is a C compiler, but if you were to show me some code in written with the latest JS MVC or FRP framework, don't hold your breath for me to tell you what it does. I can't say that I fully understand this, and that's why I enjoy the rich discussion the submission spawned here.
