I suppose you can't really fault Wikipedia for saying "Linux" instead of
"GNU/Linux".
I also once saw a writing style that gave more authority than deserved to
Linus Torvalds, when combined with the tendency for "Linux" to be used to
refer to GNU/Linux: "Among those critical of the new version is Linus
Torvalds, the creator of Linux...". The statement is technically correct, but
this was in an article about the whole controversy over GNOME 3,[0] which has
nothing to do with the kernel of the system, which suggests that the only
purpose of mentioning that he is the "creator of Linux" is to establish
authority for his opinion by implying that he is responsible for the whole
system.
What we really need is a "neutral" term, but this is problematic; you'd think
that "GNU/Linux" would be neutral, right? When I saw "GNU/Linux" back when I
thought that the whole system was Linux and created by Torvalds, seeing
"GNU/Linux" just made me assume that "GNU" was another system similar to
"Linux", and it never bothered me. Why the hell does it bother certain people
so much, then? They say "Linux is popular", but "GNU/Linux" is a terminology
choice which recognizes that.
Side note: I've thought about the naming thing quite a bit, and one possible
term I kind of like is "Linux GNU". Everyone knows that "Linux" is some sort
of software, not an organization (though many people wrongly think it's a
whole OS), which is unfortunately not true about GNU (many people wrongly
think that "gee-en-yew" is some sort of organization). With this, the only
possible meanings for "Linux GNU" that I can think of are "Linux, which is a
variant of GNU", or "the Linux variant of GNU". One of those is correct ("the
Linux variant of GNU"); GNU/Linux is the GNU system with Linux as the kernel.
Thought of another way, if someone produced an OS called "Linux BSD", it
would be easy to understand that this is a variant of BSD using Linux instead
of the BSD kernel. The only problem with "Linux GNU" is that other possible
meaning; if too many people think that it means "Linux, which is a variant of
GNU", they may drop the "GNU", thinking it's unimportant, but this would be
avoided by a page explaining what it actually means.
[0] https://en.wikipedia.org/wiki/Controversy_over_GNOME_3
