I agree with them being overloaded most of the time. But I think Tacoma's are more often overloaded and under trucked.
I don't have a current weight slip, but I am aware when I am towing ('18 Power Wagon) I am over on my payload, but under on combined weight as well as axle ratings. My payload is overall 1365lbs. I drive the truck constantly with a Cargo Glide 1500 bolted in the bed, a RetraxXR Pro cover, and the Leitner ACS rack with accessories. Added up I would call that 450lbs to be safe. Toss in my family, two dogs, paddleboards and mountain bikes and I have used up most of my payload (if not all) before I even hook up the trailer. To offset the added weight I have gone with the Airlift 5000 bags and Daystar cradles, this eliminates the limiting factor of the truck in my mind. The biggest difference between the Power Wagon and a traditional 2500 (when it comes to its ability to tow/haul) are the softer springs and C load range tires from factory. The addition of the air bags and E load range tires removes those concerns. The rest of the truck can handle much more than the sticker on the door indicates. The engine, transmission, frame, brakes etc all come from a standard 2500/3500. Axle ratings are in the 6000+ lbs range as well.
I would not recommend a Power Wagon if you are considering a slide in camper, even with bags, but if you are looking for something to tow a 7600lb trailer comfortably the truck will do it all day even if on the scale you are a bit over your payload.