That's really not the Suckless way. It is hard to really describe in a nutshell, you should just check out their philosophy page: http://suckless.org/philosophy
I guess the best way to describe it is they are along similar lines as the 'cat -v' folks.
I get that using client-side fonts adds dependencies and complexity, but XLFDs are not "simple"... for the user, anyway.
I dunno. The Suckless guys may feel that simplicity of implementation is king; I believe that simplicity for the user is more important. Each to their own.
I guess the best way to describe it is they are along similar lines as the 'cat -v' folks.