Or they know you can't do squat about it so don't bother.
I have many problem children with laptops that are constantly complaining about heavy they are and how it hurts their shoulders... You're not the only one with a job you know
They just want new things and will say whatever to get it. Our policy here is if you don't like what is available on the schedule we make it available (new laptop every two years), feel free to buy your own. Which was put in place after I started looking at some people-based metrics instead of hardware age/wear metrics. If someone got a new laptop that was better than the rest in that person's circle, the others would complain for very similar reasons to the initial approved request, despite the age/condition of their hardware.
Exhibit A:
One individual that I got to switch to a MacBook Air (because of all the complaining about how many times we had to restore her hard drive because of whatever garbage she clicked on and she really wanted a Mac anyway)... as soon as the new MacBook came out she immediately starting complaining about how slow, heavy, and bulky her 7-8 month old (at the time) MacBook Air is and how much faster/better/lighter the MacBook would be... Reality is not a friend of hers.
Exhibit B:
This individual routinely had the smallest, lightest, newest Windows Laptop we provide in his department. Why? Any time someone got a new laptop, he would put his laptop in his checked baggage as close to the outside as possible so it would inevitably get broken by the baggage handlers and need replaced. When I asked why, on the 4th or 5th one, would you do that... He invariably stated that it was too heavy to carry-on. His laptop was always the lightest, thinest, smallest PC-based laptop on the market, there was nothing lighter or smaller. Eventually, after that person "left", it was revealed that he made a big joke/game about it with his buddies that he was doing it on purpose so he would always have the newest laptop of the bunch.
No one complained directly about battery life on any device... Until we gave up picking laptops based on job tasks/what we heard and put out a survey as to exactly what was
wanted by these people. The number one response was lighter. An extremely close second? Longer battery life/Spare battery. 8-11 hours of use was no where near enough, they wanted 12-16 hours. What accessory was complained about the most? A write in: the power supply and all its' cabling.
Only on an Apple forum would someone justify losing battery capacity by stating it's "good enough". People need their heads removed from their posteriors. Apple has it wrong reducing battery size.