The grandparent is a dick. I understand that this is a transitional period for Firefox extensions authors. That's not my problem. My problem is the direction the browser is heading.
I was a happy 3.6 user. I skipped 4 and upgraded to 5. First thing I notice is that the status bar is gone and replaced with a line that hovers at the bottom of the page, showing the URL.
That's the noob's way. That's how Safari and Chrome do it because they don't want to bother their users. Good for them, but I'm a power user and I want a power browser. I like being in control of my web experience.
The status bar is a part of any sane application. It is intuitive. It gives feedback on what's happening. It's not that you gave us the choice of disabling it, we could already do that ages ago. You simply took it away from us.
I know I can bring it back with an extension but that's not the point. This change was indicative of where Firefox is going. It's becoming a noob browser. If I wanted a noob browser I would use Safari or Chrome. I use Firefox because I want to have all the power extensions that allow me to control how things happen in my browser.