Yes and No. Yes, it will have the 2nd lowest payload in lineup but incorrect that it won't be the truck for me. I placed and order and rule of "no takebacks" is in place.
Why this truck might be better with payload than you are realizing. I was looking at a Sierra AT4 and its payload ended up being less than my Highlander, and somehow less than my Sedan, lol. What one needs or doesn't need is entirely a matter of one's perspective. Owning a truck without a care to payload, when as you mention is already low for its class, does seem silly to me. If you haven't a care in the slightest about payload then an SUV would seem a far better endeavor, from my perspective.
As it is, the RHO, meets my towing, payload, offroad, and fun requirements.