I absolutelly agree with that first paragraph! But only when it's a device for an average consumer / worker.
There are lot of professionals that use the 100% of the CPU not matter how powerful it is. And the difference between a 2013 broadwell or the 2016 Skylake results in a lot of time saved.
Not to mention it will also save alot more of energy. Skylake and DDR4 RAM alone will be a big improvement in lower energy consumption. More power, with more juice left