Anything is better than burying plastic bags full of the shit (pun intended) or placing it under a rock which I see a lot of in my favorite camping spots. I've voiced it here before and will again, crapping in plastic bags and then tossing it in the trash should not be done. Burying it (sans bag) in a properly dug scat hole or dumping it (sans bag) in a toilet or dump station is preferable.
I don't know why people are so against using a portable toilet with the little tank and flush mechanism (they are cheap) or even just a bucket with water and some septic safe chemicals. It is easy to add capacity by dumping these items in a sealed bucket for later disposal if need be. Putting it in bags in the garbage can cause someone else down the line to get sick, and doesn't smell that good. We have homeless people doing that in the dumpsters at my office and it really, really, REALLY stinks and is just plain gross. The poor maintenance guy had to clean some up that they were too lazy to actually put in the dumpster AFTER the bags got ripped by the garbage truck after tipping the dumpster. Even a composting toilet is much preferable, but not always practical in small space or every budget.
Perhaps this group should come up with a mutually accepted and non polluting practice and all agree to follow it so as not to contaminate the dumpsters of the world and not have to deal with the bags of shit either.
The whole crap in bags thing is giving fulltimers and vandwellers a stigma that cannot be undone once in place. Think about that. Be good stewards of the lifestyle.