Yes. But, go back to what this specific metric is "50% of adults in the county have been vaccinated" Not even 50% of people, just adults. That doesn't sound like enough to get enough of an impact. To your point, pick a metric. But, if you're only going to pick a vaccinated only metric, it better be high enough to really matter. In this case, they didn't, they also picked other stuff. Which lets them have a lower vaccinated metric, assuming people read the whole thing and don't stop at the first thing. I think you would agree that "50% of adults" as the only metric isn't good enough.
While I think the metrics they picked were a little low, that's my opinion. I don't think they're so low to be useless. There's a large spread of values between to low, middle ground, high, and so high it's useless. I think this particular 3 part metric falls somewhere in that spread between middle and high, not in the useless category. I think there's lots of valid debate in that range, and I fault nobody for a different opinion of where in that range we should target. (People in the so high it's useless range, that's a different story.
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