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The continents that are most bothered about this are the continents that are dependent on these African countries for their natural resources. Take for instance, France, which is already slowly being affected by the limited resources they are no longer receiving from the country they have been exploiting. From Burkina Faso, they have suspended all gold exports to France.
If there are more coups and resources to European colonizers are cut, many of those European countries will be affected. That is a danger for their economy.
Is already looking like it's too late for these African countries to take action in stopping this exploit, the African continent has been exploited already and the resources left is been shared among those of them that are currently their leaders. It is not enough to drive away colonial masters, Africa needs accountable leadership, they where on the same level with some Asian countries like Singapore, Malaysia and china in terms of under development in the early 90s, those countries have left African behind because they were serious with their institutions and their leadership structure.