That's because you don't *want* to see... Most of the reports on [1] are from readers who don't know anything about Bugzilla. That doesn't make that anything less valid.
Please don't accuse me of things that are not true. I do want to see these things, but I have to manage 1) mailing lists 2) bugzilla 3) wiki pages (which i have to know exist). I am only human. Thanks for the links to bugs I've cc'ed myself on all of these.
The problem with https://www.mediawiki.org/wiki/Talk:Typography_refresh#Languages_problems is that they are easy to get lost. If you want the full attention of a developer they need to go into Bugzilla. Recording bugs, sometimes on behalf of these users can help give them more attention, especially on a huge wiki discussion page like this where this sort of thing gets buried. I opened a bug for this one: https://bugzilla.wikimedia.org/show_bug.cgi?id=63827
Since that page was linked as the primary feedback page when the refresh was announced, it should be the first place to check for error reports. Claiming non-existence of Bugzilla reports is just plain selective ignorance.
I disagree. Bugzilla is where we report bugs. If no one raises bugs as they will go lost.