Wikipedia qualifies as toxic Internet for many people for several reasons: it's heavily manipulated by political and corporate interests as part of their image polishing media strategy, the links that are used to provide credibility for articles are poorly curated and often broken, and the internal power (deciding which articles get heavily edited by invested interests etc.) structure of Wikipedia is mostly hidden from the public.
If anything, children should be taught that Wikipedia is not a reliable source, meaning citing a Wikipedia article in a bibliography for a paper should never be allowed by any responsible educational institution.
> the links that are used to provide credibility for articles are poorly curated and often broken
I didn’t appreciate this until a few years ago when I got into the habit of going on deep dives to find primary sources. Easily half of all the sources I checked were either paywalled, out of print, or simply didn’t say what the Wikipedia article claimed they said.
If anything, children should be taught that Wikipedia is not a reliable source, meaning citing a Wikipedia article in a bibliography for a paper should never be allowed by any responsible educational institution.