GIMP also has a steep learning curve. But these same "users" turn their noses at spending some time getting to know the workflow.
As someone who is proficient in both, it is not hard to hit similar levels of productivity with GIMP as it is in Photoshop.
I hate this attitude that people have with open source being "user hostile". Stop acting like spoiled children. Why must the software always come to you? Why cant you come to the software?