The post would have a point if the Flask team treated this like a minor release (2.x -> 2.x+0.1) instead of a major (2.x -> 3.x) and hadn't issued a deprecation

The post would have a point if the Flask team treated this like a minor release (2.x -> 2.x+0.1) instead of a major (2.x -> 3.x) and hadn't issued a deprecation warning.