You guys should up your web game
FWIW Firefox mobile lets you override zooming on a site.
What in heavens name and why is this not a default option? Thankee Sai!
Apparently about:config is still not available on Firefox Mobile main release it seems.
Supposedly available on Dev/Beta/Nightly or similar - unverified statement though.
Annoying.
Firefox 3 dot menu -> Settings -> Accessibility -> Zoom on all websites
FWIW Firefox mobile lets you override zooming on a site.