And Xi has consolidated power and purged all competent up-and-coming potential successors that threaten this power. He shepherded through a modification in Chinese law to allow him to serve for life. Previously, the vaunted governing expertise inside the CCP had an age cap for its leaders. Not inspiring much confidence in their system.
Another thing that doesn't inspire much confidence is looking at Hong Kong. The people there have unambiguously and collectively spoken about their desire to live under this system, often at grave personal risk.
Xi has only served for around 7 years, not even as long as some presidents. Merkel has served for somewhere around 15 years and many senators and congressmen have served for multiple decades.
https://in.news.yahoo.com/xi-jinping-undertakes-fresh-round-...
Another thing that doesn't inspire much confidence is looking at Hong Kong. The people there have unambiguously and collectively spoken about their desire to live under this system, often at grave personal risk.