> Почему-то они все гораздо удобнее
> но кого-то одолел NIH-синдром.

Да нет, просто благодаря Леннарту Великолепному пошла мода прибивать ДЕ к пингвину и системд такими гвоздями, что проще написать еще один ДЕ, чем каждый раз ковырятся, портируя.
https://blog.pcbsd.org/2014/04/quick-lumina-desktop-faq/

> Why create a new desktop environment? Whats wrong with KDE/GNOME/XFCE/<other>?
> (4-a) Porting time
> Since the DE’s are written on/for linux, they have to be ported over to BSD, and this introduces a (sometimes significant) time-delay before updated versions are available
> (4-c) Linux development trends
> As Linux trends continue to diverge from BSD through reliance on Linux kernel functions or Linux-specific systems/daemons, the porting process over to BSD is going to get even more
> difficult and take longer to accomplish. This means that if we want to have a reliable/stable desktop on BSD going forward, we have to have one designed specifically for the BSD’s.
> (4-d) Linux dependency bloat.
> If you look at current DE dependency lists, it is easy to see that when you install a desktop, you might be getting a lot more than you bargained for (such as additional compilers/programming languages, network libraries/daemons, audio/video daemons/applications, etc).