Sometimes I use the kickstarter but usually use the electric one on my 2011, G5.
I have never heard of a real problem with the kick starter in a UCE but I checked out what needed to be done to fix it if it ever failed.
The Kick Starter Return spring is pretty easy to replace. The right sidecover, transmission output drive sprocket and the starter spring cover just have to be removed to get to it.
If something else breaks like the pawl spring or the pawl we're talking major tare-down. The entire engine/transmission must be totally taken apart because all of the important stuff is inside the engine/transmission case.
The thoughts of needing to do that sort of major surgery doesn't give me a warm fuzzy feeling about using only the kick starter.
Hell, by removing the left sidecover, the clutch, duplex chain and chain tensioner and the crankshaft output sprocket you can replace the infamous Sprag Clutch.
Compaired with fixing a major kick starter problem, that's a walk in the park.