On https://www.mediawiki.org/wiki/Special:Statistics, "Content pages" links to https://www.mediawiki.org/w/index.php?title=Special:AllPages&hideredirects=1. Except &hideredirects=1 isn't operative because miser mode is enabled. Rage. If MediaWiki doesn't want to perform its basic function, the least it could do is output a correct URL that does not include a bogus URL parameter.
This issue was already reported in T173479: Special:AllPages no longer has the ability to "hide redirects", like Special:PrefixIndex (regression?), but wasn't fixed.