Hum... Keep in mind that there is no option to not erase your configurations. And that "configurations" has a very bread sense, including everything from about:config settings, themes, extensions, history, cache, cookies, saved passwords, and even for a short period including bookmarks (thankfully that one they stopped erasing). And, by the way, Firefox will revert from a backup if you are logged in into an account, what is probably the reason the devs didn't nuke this by themselves, but also leaves plenty of room for conspiracy theories and user enragement.

Having a button somewhere where the user can go and reset those things is ok. But keeping pestering them until they click on the button is really not.