If true (and I'm not sure it is), that's a shame, because it essentially means new adoption is discouraged, and that's death to a project.
I don't feel this translates to "no noobs" as much as it means "don't stop with the noobs." I'm pretty sure inexperienced users are welcome, but there's no interest in adding hand-holding features that conflict with the philosophy of "keeping things simple, minimal and usable." I use dwm & dmenu all the time, and have developed a real appreciation for the Suck Less approach (but I'm not a newbie, so I guess I'm safely in their target audience).
Because dwm is customized through editing its source code, it’s pointless to make binary packages of it. This keeps its userbase small and elitist. No novices asking stupid questions. There are some distributions that provide binary packages though.
Also anyone who has ever subscribed to the suckless mailing list can testify to the elitist sentiment among many of its users.