There are many Smalltalk “dialects.” I chose not to rattle them all off. That would dilute my Smalltalk message (pun not intended).
I’m wary of fragmentation, just like you find in the Linux world. So I prefer to focus people’s attention on one or two Smalltalks.
I’ve mentioned Smalltalk’s “biggest problem” in other articles. It’s not really such a big problem. Pharo is beginning to address this problem with some of its latest developments.