You got a good point. Crying about a 5 lb weight difference would have people offering me a skirt.
But...
Depends on what you do and how you do it.
I'm a homeowner cutter. I don't have a chipper that takes 12" wood. I'll actually keep branches 3" and better to burn. So the amount of limbing I do is likely much more and for more time than any PRO would do. My brush gets burned after drying. Holding a saw with two hands at arm length for hours is much more pleasurable when it an 026 than an 066. Been there, done that, and I'm not a weakling.
Now for bucking, a heavy saw is less work for me because it's weight helps downpressure in the cut. I don't like walking 1/2 mile in the woods carrying one heavy saw at all, I'd rather carry one in each hand for balance. It's harder to carry one.