So here we have Midas explaining why he uses GPH. From a competitive point of view Critical loves reading about goblins using GPH as their basis for entering, leaving or remaining in a particular market. The counter is too easy, drop their GPH and insta-win!
But Critical does not reside on Malygos or Cael so you are not Critical's competitors so I will share my thoughts (Sapy, Shamanta, Discretetime and other glyphers on Tich H close your ears and eyes please).
We can all agree that GPH is like any other form of measurement eg miles per gallon or meters per second. It is just a measurement.
The trap that Critical doesn't want you my faithful Reader to fall into is setting a "good"/high GPH as your goal. It's like saying I want to have a job that pays $100,000 per year. Yes a $100k job is great but imagine you are the sole owner of the company that is paying those $100k salaries. Critical would rather be Ray Croc than the branch manager.
Thats why Critical says GPH is bad. Do you love working so much you want a second job inside wow on top of your 9-5? Didnt think so. Critical says build a bigger business not a higher salary.
PS: dont buy that Hit Gold Cap guide. They wont pay me a referral fee =(.