Simple question: did you ever see a wag bag on the main trail back when there were toilets? Of course not.
Are non-biodegradable items in a solar toilet a big deal? Not really, they fall into the basket and get hauled off. The National Park Service deals with it probably every day in the summer at one of the hundreds of backcountry toilet somewhere.
Would you rather see wag bags on the trail while you're carrying your smelling bag up and down the mountain, or have a modern solar powered toilet to do your business and no wag bags to deal with?
Let's face it, people screw up. All you can do is pick the best of the imperfect options.
