I can be sympathetic with someone arguing GIMP is not good enough for him due to the lack of CMYK support (I was bitten recently when exceptionally had to print some stuff), I can understand a photographer needing more than 8 bit color channels, I can see why adjustment layers can make your life easier, I can contemplate the [legal] impossibility to have Pantone colors and so on.... But when a self-called designer and self-called user of both Photoshop and GIMP criticise GIMP's interface and usability serving as "proof" his need to search for 2 hours (!!!) to find the Crop function, then my bullshitometer alert is reaching record levels.
...well, at least I hope is only bullshit, otherwise it would be just sad. Part of the same argumentation line: GIMP's layer selection. Duh!