Gimp UI is a little rougher than PS. (Used PS for 10+ years when I worked as a full-time news photographer.)
But Adobe apps have that "Adobe smell" to them. And it's all a balance / trade-off. Worse UI in Gimp, sure, but then on the other hand there's no Adobe smell in Gimp. No constant "phoning home". No monthly subscription.
There's pros and cons. Been a PS user since about 1994 maybe and a Gimp user since about 1999. Having used both extensively, I find that on-balance Gimp is the winner. Gimp's core feature set is as powerful as Photoshops. Gimp doesn't have the PS features like content aware fill. But Gimp has levels, curves, resize, upsample, unsharp mask, cropping, rotating, layers, up to 192 bits per pixel color depth (64 bits per channel RGB), compositing tools, etc. CMYK wasn't much of an issue in the newspaper world since rips convert RGB to CMYK on the fly when making plates for the press.