Alright, let's be upfront here. First of all, Asia is a whole continent made up of countries with different cultures hence the generalization is off. It would have been better to state that financial education in Asia is lagging behind Latin America and other regions due to Asia's limited experience in the financial education sector. In fact, according to Yoshino, Morgan, and Wignaraja's 2015 study entitled Financial Education in Asia: Assessment and Recommendations, the reason why most Asian children are being taught to save rather than invest is not because of culture and other factors but is due to two factors: (1) lack of diversity in financial products and (2) lack of unification between education programs at the national level, the level of central banks and regulators, and the private sectors.
In conclusion, it is not culture or ecosystem that affects why most Asian kids are being taught to save rather than invest, it is the countries' lack of experience in financial education.
Link to the research article: https://www.adb.org/sites/default/files/publication/161053/adbi-wp534.pdf