Yep. My tire damage rate was 100%, in other words every single trip. Not worth it. The large companies use NPRs because these trucks allow dodging nails, and the large trash companies use class 8 trucks which apparently cuts down on it somewhat.
Plugs are a serious way to fix a puncture through the tread face. A plug can last many years on any vehicle, and if you are going to be in landfills, that's something you'll have to get good at, and come to terms with. Side wall problems, 90% of the time, I consider driver error. Be mindful of where you are driving, and where you are turning.
Mine is a Class 8 truck, and I spend a fair amount of time in landfills and scrap yards with it. I'm sure that being a Class 8 helps my tires last, but I carry a plug kit in the truck, and it gets used often. I don't find it worth the time or effort to take a tire off to patch it. I buy used tires that have very little legal life left, especially lately when casing credit is low, they can be bought cheap, so I usually have a few complete changes on standby. All tire changes are done in-house.
I've known a couple of guys that were in landfills a lot with 'less than' Class 8 trucks, and they both had their own 'well-used' tire machines, to change their own tires... and they had more spares mounted and ready to go than I do.