I use almost no icons, and in fact I ended up installing a plugin to hide the me...

uxcn on July 24, 2015 | parent | context | favorite | on: Firefox nightlies for Linux are now using Gtk+3

I use almost no icons, and in fact I ended up installing a plugin to hide the menu bar after the last UI change unhid it from vimperator. So, I guess this doesn't impact me.