Let's put the eggs aside. The government determines an inflation target and tries to control the inflation (e.g. by changing interest rates, buying or selling securities etc). So why not set the target to 0%?

For example, this site [1] states that in recent years the inflation in Japan was about 0% on average. This proves that it is possible to keep inflation around zero. Maybe it is because Japanese government unlike Western ones has respect for hard-earned money of its citizens. It seems that Japanese government doesn't put its hands into citizens' pockets.

I have also read this article [2] but it offers no explanation for outstanding stability of Japanese economy.

[1] https://www.worlddata.info/asia/japan/inflation-rates.php

[2] https://hbr.org/2022/12/what-causes-inflation