I'll agree it's not a perfect analogy. But if you want to press me on a potential abuse of a government-mandated and punishable order of wearing masks: Abuse of power by corrupt government officials that can use this extra and easily-fakeable "offense" in order to punish individuals that they don't like. Or what about the negative social aspect of creating laws that have neighbors secretly reporting each-other for this? Or the potential for child-traffickers to gag + hide the gag with a mask while they're busy engaging in trafficking?
If you sit long enough you can come up with a potential abuse for any government law or idea. Just as is done with mass-surveillance. What we don't do is sit down and come up with extraordinary ways and means for us to use powerful tools/ideas/solutions such as surveillance in a responsible and safeguarded manner that is not exploitable by bad individuals in government, or bad governments themselves.
If you sit long enough you can come up with a potential abuse for any government law or idea. Just as is done with mass-surveillance. What we don't do is sit down and come up with extraordinary ways and means for us to use powerful tools/ideas/solutions such as surveillance in a responsible and safeguarded manner that is not exploitable by bad individuals in government, or bad governments themselves.