There's a lot of truth to this. One thing I've noticed is that there are many different styles of writing Common Lisp; many of the older styles (heavy use of lists as data structures or very heavy use of macros) tend to not work well (at all!) in team software engineering environments. OTOH, if you agree on some coding standards with your team, team software engineering with Common Lisp can be a real pleasure. Of course that's true in any language, but if you're a lone ranger, CL makes it much easier to shoot yourself and your team in the foot than most other languages.