Of course it's more political than anything Bill and Melinda are doing. Jack Ma is a member of the CPC. The CPC is the sole organ of power in China. Currently they are going to great lengths to try to make everyone around the world forget that they are the ones who caused this pandemic in the first place. They've even stooped to allowing the conspiracy theory to spread that the true origin of the virus is overseas. It's shameful.
When the immediate crisis is over, the world needs to hold the CPC accountable. You don't get to set a fire and show up with a bucket three months later expecting to be declared a hero.
So, Jack Ma donating masks around the world can be a positive thing for the people affected by the virus right now, but it can also be a cynical political move at the same time.