Now that I am retired from construction the only other use my truck gets is for home repair type of stuff or helping friends. I have a Warner clamp on lumber rack that helps move long materials. I have carried well over the GVWR in my trucks. 2 pallets of 60 pound quikrete and many bags of sand would be well over 7000 pounds.
On my 3/4 ton work trucks they were overloaded more. Just the 2 knack boxes, generator, compressor etc would max them out and then the roof rack loaded with lumber. Trucks really do a lot more than the tale of the door sticker.
I see some veterans of truck campers fret over GVWR but for the most part it seems like TC noobs on FB with little experience who shout the loudest about the sky falling.
Now that I don't need a truck aside from small jobs (which I could rent a truck for) I have considered going with a motorhome type set up but so far I have been hard pressed to find something that is as capable off road, as roomy inside and does't cost double or more what our current set up has (which are still not as roomy inside).
We are considering at some point going to a smaller SRW SB truck with a flatbed and an alaskan flatbed bed camper as well as a small 5th wheel so we could travel in a couple different ways for different trips leaving one rig at home. Right now though a TC even if the truck is underutilized when the camper is off seems to be our ideal rig.