Ahh heck I'll throw my thoughts in here as a data point...
2014 GMC Sierra 5.7L Crewcab shortbed
6 speed / 3.42 (I think)
~9800lbs tow capacity
~1500-1700lbs "bed capacity"
w/Adjustable air bags
w/22' 10k trailer weighing b/w 2.5K & 3K
** Can't remember the exact truck numbers as I no longer own the vehicle
My personal experiences? - the combo was put together for a different intent, but I did scale and tow up to 9k combined trailer + load weight (typically vehicles) a couple times a year while I had that combo. I did run the real, scaled numbers a couple times to make sure I was within combined vehicle "weight spec" & tongue weight, even if I wasn't using a weight distributing hitch
For the occasional across state tow job (every other year), or around the hilly, but not mountainous rural county (5-6 times a year) I live in that weight combo worked just fine with care and understanding about the limitations involved.
For better or worse I also have had to run that combo through Atlanta traffic any number of times and while it certainly made me sit up and pay attention in terms of speed, braking distance and traffic spacing, it was never a huge white knuckle issue. Mostly I slide into or behind a semi truck carvan and took my cues from their spacing, speed and braking.
By comparison in the early 2000's I ran 1 ton singles or duallies for the state of Florida towing large boats and manatee carcass trailers cross state and my personal truck combo general felt as stable under normal conditions. (yes, I do acknowledge the increase braking and reduced risk of tail wagging inherent in a 1 ton truck - it is a very REAL advantage)
That said details start becoming more and more important once you start pushing up to the edge of a vehicle's performance envelope. Were it me and I were to be:
-Be towing up around 9-10k on the regular (monthly/every other month?)
-OR having to deal with real elevation changes while on the road i.e. going over real mountain (I ran through the foothills of N GA)
-AND/OR regularly in heavy traffic
I would want and do advocated for some type of tow vehicle with a longer wheel base, increased suspension & braking performance and engine/transmission cooling capabilities than what is offered by today's 1/2 ton trucks.
I learned that lesson in an abject fashion with the trailer I've been mentioning in this post. Bought that trailer before I had my GMC & was using it & a 2006 Jeep Commander w/the big V8 to tow my
BX2360 around town - everything was well within spec based on published tow rating for my vehicle, real scaled weights and correct load distribution on the trailer for pin weight.
In any case, one afternoon I was coming home with the tractor on the trailer. It was raining very lightly & as I started slowing down coming up to an flat 3-way "T" intersection the Jeep locked up and the trailer pushed me straight through the intersection. Thankfully no one else was at the intersection & I moved up my already existing plans to upgrade the tow vehicle I could afford AND that met the vast majority of my towing needs - typically a total trailer+equipment weight of 5k-6k.
As others have mentioned there are work arounds to having a 3/4 - 1 ton truck as a daily driver . Something else to keep in mind too is that using a 1/2ton up near edge of the tow envelope will likely eventually have some real world impacts in terms of wear on suspension and drive train components over the life of the vehicle.