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The city was always going to struggle with vaccine hesitancy. One CUHK survey found only 37% of adults would get the jab; while more recent HKU polling has shown it overs around 50%, lower than other jurisdictions in Asia/globally -- as well as below threshold for herd immunity.
Many of us have been hoping other countries would take similar measures quickly, but have instead watched as developed countries downplayed the threat and delayed responses until it was too late. It's been surreal watching D.C. and Europe mishandle this.

Although Indian cities saw a dip between 2018-19, report authors @MyAirVisual say that's a result of India's dramatic economic slowdown (~8%+ GDP growth cratered to ~5%), and not a sign that new policies (including NCAP) have begun to have an impact. 
India's verdict has obviously validated Modi's winning formula, which I believe is a potent mix of incremental and sometimes questionable economic reform, sprawling welfare programs for the poor, and populist appeals based on nationalism and religion.