[kazinator]

Dialects of Lisp that don't want to be Common Lisp probably also don't to be ISLISP even less.

If I'm a hacker with ideas about implementing Lisp, I'm not about to whip out ISLISP and conform to it as a starting point. I'm going to invent everything from scratch and kind of just borrow things here and there from other dialects.

Therefore, its existence has no bearing on legitimizing what I'm doing. In fact, the existence of yet one more standard that I'm not conforming to is only undermining my legitimacy. ("There are seventeen standards; why are you inventing something new? Must be not-invented-here syndrome!")