Last modified: 2013-12-19 16:07:13 UTC
Let users with poor eyesight change page's font size in their preferences.
I don't see why users would not change the zoom level in their browser instead. Some browsers (Firefox, maybe more) remember zoom settings on a per-site level. If zoom changes create problems with layout, those layout problems should be fixed instead ("responsive web design").
Oh well, let's mark this as a duplicate of the open bug 24739 instead. (Please only add a comment over there if you have new technical arguments.) *** This bug has been marked as a duplicate of bug 24739 ***