This isn't really true, regardless of whether you like masks or not. There have been one or two level changes with respect to how much risk you're introducing to those around you as well as the personal accountability of those you'd affect. It's not surprising that different people have different tolerances for these risks.
Even without the above factored in, this is sort of like saying that not using your turn signals in traffic on the 100th turn nullifies their utility for the previous 99 (not a perfect analogy).
Even without the above factored in, this is sort of like saying that not using your turn signals in traffic on the 100th turn nullifies their utility for the previous 99 (not a perfect analogy).