xfce has been more popular than kde for years amoung Debian users.

https://qa.debian.org/popcon-graph.php?packages=kde-standard+lxde+xfce4+gnome+kde&show_installed=on&want_legend=on&want_ticks=on&from_date=&to_date=&hlght_date=&date_fmt=%Y-%m&beenhere=1

Also, I'm told kde has little or no accessability features.

"Why not MATE?" might be a better question..