How many stack overflow questions and answers are there for lisp(s)? How many for Java? How many applications on the web are written in a lisp? How many are written in Java (or Python or Ruby or PHP)?
There's a lot more to accessibility than how easy the syntax is to grok. This is just one simple and limited example.
>How many stack overflow questions and answers are there for lisp
Yet there are a ton of books written about Lisp in all kinds of topics and applications. Not to mention really well-written tutorials like "Practical Common Lisp".
Plus, the documentation/reference of the language itself is comprehensive and well written, comparing favorably to the documentation for most programming languages out there.
There's a lot more to accessibility than how easy the syntax is to grok. This is just one simple and limited example.