It can be both. For some countries, having a high-value currency is beneficial, whereas some countries can also benefit from having a weaker currency. This is because the weaker currency aids their export industry. Gaining significant market shares is easier for these countries as their goods are comparatively cheaper to buy. But, it is not always the strategy for the improvement of the revenues of export. Currencies like the Nigerian naira or the Tanzanian shilling are weaker because of their grave economic challenges.