Bollocks. The "Linux desktop" been downhill since 2008 or so when GNOME 3 was introduced, creating a desktop that wasn't intuitive, didn't use CUA mechanics allowing easy discoverability by people who were familiar with Windows or Mac (...or Amiga or GEM or... etc... etc...), and was just plain awkward.
I take it, then, that the only Linux DEs you've tried are Gnome and Mate. There are others, you know, and some of them very easy to configure. When Gnome 3 was announced, I took a look at what it was going to be and was appalled. Not only was it hard to configure without third party addons that might stop working at any time, it needed more RAM that I had, and things like paying my bills and putting food on the table were more important than hardware upgrades. I took a quick look at KDE, and couldn't find anywhere on their website that told me what was so great about it, just "Try it, you'll love it!" and similar advocacy.
Then I found Xfce, and rapidly fell in love with it. Not only is it lightweight, it's highly configurable and easy to get it to look the way you want, especially if you add Compiz into the mix. Of course, Xfce isn't for everybody and it doesn't work, yet, with Wayland, but again, that's part of it's being lightweight. Personally, I use Fedora, and if you want to do things the easy way, Fedora has an Xfce spin that you can use to try it out, and if you like it, you can install from the LiveMedia.