The title of the HN post is incorrect, and the worst kind of incorrect because it editorializes what is otherwise a correct title on the original article: "Buterin Explains Why Ethereum 2.0 Upgrade Won’t Arrive Until Late 2022".

"PoW to PoS is expected to take place sometime in 2021/2022"

It's the "the shipping of shard chains is not expected until sometime in late 2022" that is further delayed.