This is the problem. Wikipedia takes its lead from encyclopedias, but it's not an encyclopedia, because it's fundamentally different. It doesn't have the same space constraints, it isn't written in the same way, it isn't referenced in the same way, etc.
"Does this article feel like it belongs in an 18th century concept of an encyclopedia" kind of test for inclusion or deletion in Wikipedia just seems wrong-headed to me.
I've never understood why those who do want wikipedia to be wiki-random-non-notable-factia don't just start wiki-random-non-notable-factia. I predict it will be fairly unmaintainable, but I'm totally keen to be proven wrong.
I suggest that you start an "expanded Wikipedia" project with more inclusionist criteria. I'll be happy to contribute, although I'm pretty happy with the English Wikipedia's notability policy. I'm sure thousands of other people will be too, especially if the result is any good.
Jimmy Wales already did something like this, by the way.
Articles about random Internet personalities or some garage band are thus inherently not in the scope of the project, until they become more notable.
While I don't agree with some of the policies on the English Wikipedia, you also have to consider that having articles about anything incurs a long-term maintenance cost on the project. This especially true when the articles are about living persons or controversial subjects.
People are always complaining about Wikipedia because some obscure subject they personally care about didn't make the cut. Meanwhile there are literally millions of very useful encyclopedia articles on topics that unquestionably belong in an encyclopedia.
It's that sort of content that Wikipedia mainly caters to.