It's true and seriously misleading.
He's edited it a lot since (and even toned down its title), but the blog post he wrote against Python 3 was a FUD-filled incoherent piece.
You can absolutely expect members of the Python community to be disappointed. A lot of those members are people who learned from Shaw and to see him write a piece like that is heartbreaking.
The people on /r/Python who called for the removal of links to his resources (because yeah, it's not the PSF actively seeking out websites, it's the websites' members wanting him gone), those people were not "out for vengeance", they were not willing to link to material which actively campaigned against where the community was moving to.
He may be trying to position himself as one, but Zed Shaw was not a voice of reason who would point out the Python 3 flaws which nobody else dared criticize. Plenty of others criticized Python 3. Zed was actually trying to harm the move to it.
Congrats on the book, and I'm glad he changed his mind, but I have no sympathy to his complaints there.
PS: This is what happened to processing durations when I upgraded our Hearthstone log parsing pipeline from Python 2.7 to Python 3.6 after Amazon finally made the latter available on AWS Lambda: https://twitter.com/Adys/status/878985322436206592