I don’t agree with his xfce assessment. Highly customizable? I don’t think so. If you use the typical tools, you’ll get acceptable customization in the expected areas, but nothing too elaborate or crazy. Plasma’s like flying a jet in comparison. If I was gonna knock xfce for anything, it would be the glacial development cycle. That can be good or bad depending on your pov(I like it), but it isn’t to everyone’s taste. It’s also very old fashioned looking. Again, personal preference, and it can look modernish, but it still carries the “classic” appearance.