Where the hell is this meme coming from that the FSF just talks the talk? Sure, that list contains a lot of incidental stuff too, but in order as they strike me, I see aspell, autoconf/autogen/automake (for better or for worse), bash, bazaar, ddd, dia, djgpp, ed (ed is the standard text editor), emacs, g++, gawk, gcc!!! (worthy of an exclamation point or three), gdb!!, gettext, gimp, glib, gmp, gnome, GNU fdisk, grub, gnumeric, gtk+... and I'm getting tired now so I'm going to stop. Except to honorably mention the last line in my browser as it now shows, the critically-important GNU Hello World.
I suppose the natural next objection is that it isn't people in the employ of the FSF who wrote every line of code of all of those programs, but I'd submit that that would be a very silly accusation to level against an aggressively-open-source organization.
You're sort of ambiguous whether "Joe Sixpack" in your post is a programmer or not, but if so, gcc and if not, Gnome are certainly in the running. FSF has more backend than frontend stuff but "Gnome" encompasses rather a lot in one word.