Some of us still use Smalltalk, as you might imagine (the language is hardly in the top 10 but is far from dead). Dan Ingalls, the author of that article, has been using Javascript for the past decade or so to create a Smalltalk-like environment called Lively Kernel. L Peter Deutsch gave a talk many years ago about why Python had replaced Smalltalk as his favorite language (I can no longer find the talk on the Internet). David Ungar (who co-created the Smalltalk On A RISC, SOAR, chip and the Self language) seems to be focused on Swift.