I wouldn’t say so. Article shows that the biggest factor are your eating habits. In case of Japan they are engrained in school, with methods formalized by law.
How have the eating habits in the West change over the last 70 years?
More and more ultraprocessed foods. We never had such ready access to food filled with sugar/fat/salt and engineered to taste maximally good. Stuff like soda, potato chips and chocolate bars are barely 150 years old. Frozen foods are basically 70 years old.
How does this not apply to Japan as well? Surely soda and candy exists in Japan, they are even internationally known for having a diverse candy industry.
And the USA is eating less and less sugar since around 30 years.
Candy bags in Japan are small, 50g. Drink vending machines contain 50% green tea of different varieties. Domestically sweets are big, usually with sweet bean paste and so on.