Is the Python 2->3 process and decisions surrounding it an important part of Guido van Rossum's long career? Sure. Does the fact that Dropbox, quite predictably and like all businesses with large Python codebases has also had to deal with that transition add anything interesting, unexpected, "curiosity-gratifying" to a story about his retirement? I'm not seeing it. It's a long thread of stridently off-topic comments most of which aren't even about Python, never mind the dude's retirement.