They probably thought about the decent method, but unfortunately solidarity in most if not all societies has eroded so far that large swaths of the population would have gone and scalped ffp2 masks from wherever they could get them anyway. Case in point: toilet paper crisis.
Governments are in a lose-lose situation and have been for decades now. Appealing to anything involving solidarity with others does not work any more, and yet solidarity is the core of our society model - and there is no (easy) way of fixing this, short of a communist revolution and that won't happen either.