A better example of what you're talking about is [[Basalt]]. It's unreadable for non-geologists.
Yes, basalt could do with a layman's introduction, though of course we should keep all the advanced information as well.
But let's be careful not to split everyone into "laymen" and "experts". There's a wide continuum between those who know nothing about geology/zoology/etc. and those who have doctorates in the field. We have undergraduate students, high school students, avid amateurs etc. I think *those* people may the most likely readers of a Wikipedia article about [[basalt]].
Regards, Haukur