True, some of the worst code I have seen lives in older Smalltalk images - real procedural mess making, but it worked.

Overall, one can write junk in Smalltalk, but the point is that Smalltalk makes it easier to change bad code into good code.

One thing Pharo lacks is a really nice class hierarchy browser.  Some times, there is no substitute for seeing inheritance relationships undisturbed by the whims of a package browser.