Motif today isn't that bad compared to the bloat of GTK4. Today's '486' in the era of Pentium 3's would be an Atom netbook. EMWM (enhanced MWM) + XFile flies. I quickly hacked NNTP auth support through some quick code and an Xresources value for NCSA Mosaic. Yes, that one.

Also, you get XFT and UTF-8 support thru fontconfig and XFT on every Motif based software. Far from the propietary Motif of 1996...

Compare it to Gnome and dconf...