Actually, the editor strips out Javascript for safety reasons which unfortunately, makes it so users can't add GA. We're working out whether we should make exceptions when we do the strip or provide in-house stats.
Though simple in-house page view stats would probably work better for 99% of your target audience than having to sign up for GA.
(perhaps there's a business opportunity, do a deal with someone like getclicky.com - have a simple signup/installation of their tracking code in exchange for a revenue share...)