I don’t know why he or the article is bragging about not using Photoshop. It’s easy to NOT use Photoshop if you have complete control of the stage and lighting. Indeed, for a Studio shot, why would you use Photoshop?
But for anyone who ventures out of the studio under uncontrolled conditions, Photoshop is a necessity.
Nice photos, regardless.

Started out doing photography at the age of 6 using an uncle's old 1940 kodak brownie box camera. At 15 years of age, I decided to buy my very own 1975 Praktica SLR camera. I now shoot with a Nikon D850. I do unpaid TFP and commercial paid work.