100% with you. KDE is the only desktop environment, all platforms confounded, that hasn't sacrificed power user functionality on the altar of streamlined / dumbed-down "design".

It's like a race to the bottom to please an elusive lowest common denominator class of users that doesn't exist. I find these other "modern" UIs incredibly condescending.

Instead, discoverability should be #1, creating soft, natural learning curve that welcomes new users without capping or hiding advanced functionality.