I assume that discussing financial matters is advantageous to the nations. Nowadays in the world, lots of issues are affecting the world economics. The reason for this could be war, viruses, global warmings and more that are occured in world.
For example, my country in Japan, the government are highlighting about the national debts. The cause of it is covid-19. After this incident, most companies in japan are suffering from the low income and lack of employees. They brought up the age of retirement age 65 to 70, 3 adults are paying for a one alderley. From this fact tells people that Japan is in the slump of economics. This can lead to increase the number of crimes and the poverty. Few decades ago, Japan was the top welthfull country in asia. Now Japan is competing the bottom.
In other countries, the conflicts are leading to the financial matters. When the war happens, it will coast a lot for the weapon fees or the repairing fees for the road. People might immigrant to other countries. From this it will displicate big gaps between wealthy and poor countries.
Although these events are affecting the financial matters, if the wealthy country talks about more their earnings or expenditures, the poor country can improve by hearing their way to increasing the economics. There is possibilities that they talk about their economic systems. The poor countries can earn the good information and enhance their financial matters.
In summary, discussing financial matters is advantageous to the nations and has possibilities that they can help other countries.