I have been trying to stay away from these conversations.
Let's start with this. Yes, a truck will haul and tow more than the numbers allow.
But, Payload is a very specific number. We won't argue what is right or legal but it is specific.
Payload is GVWR-base weight.
When you add these helpers/aids you are actually decreasing payload.
Now, I don't know what is right or wrong, each person has to make that decision.
But if you are towing or hauling regular and this is what you have to do to succeed...for me personally, that worries me(my opinion).
If you are trying to make your few weekend camping trips or haul to the dump in the spring and fall happen, well maybe I can see adding these helpers so you can keep your 1500 for the other 360 days a year you don't tow.
Bottom line...your highest Payload will be the day only you are in the truck and nothing else. As soon as you add your soda/coffee/ water...that payload goes down.
These lift bags and bumpstop risers must be perfectly fine, they sell alot of them...but me personally...I do not get it.
On the same token, plenty here are hauling/towing over max and having a good day with it. So, once again...this payload/towing discusion really comes down to this one bit of advice.
Tow what you feel comfortable, but be comfortable towing.
To be honest, I am just glad to see people using trucks, as trucks.