Why would anyone, these days, need a discrete GPU for surfing the web? This detail, too, just like the CPU, falls short on the fact that making actual use of its power cuts battery time down to nothing. They should just market it for what it really is: a workstation laptop with 3 hours of battery life.
They also offer a version of this laptop without the discrete GPU if you need better battery life. There are still workloads that require local discrete GPU hardware though.