That opinion piece is from August 10th, before the current wave impacted TX and FL as much as they have been affected throughout the middle-end of August. In any case, you're looking at the current average, which is obviously skewed toward the states experiencing a current wave.
Texas has an overall COVID-19 death rate of 2,008/1,000,000 people, which is 1/10000th of a percentage point higher than the national average.
Florida has an overall COVID-19 death rate of 2,138/1,000,000 people, which is still much better than New Jersey (3,032), New York (2,823), Massachusetts (2,653), Rhode Island (2,618), and Connecticut (2,354), and is certainly impacted by the high number of elderly and retirees in Florida.
As for current rates, California has not-quite-twice the population of Florida (39.5mm vs 21.5mm) but a 3-day mov avg. death rate three times as high (119 vs. 39).
Obviously, statistics can be interpreted a lot of ways. Lies, damn lies, and statistics, of course. FL's 7-day mov avg (64) is more than half of CA's 7-day mov avg. (94), for example.
But the fact remains that the two states with the least restrictive lockdowns did not end up the two states with the worst COVID-19 death rates over the course of the pandemic so far.
At a minimum, that constitutes a reasonable basis to question whether the expert consensus is sufficiently based in evidence as to support unprecedented restrictions of liberty in the country that ostensibly leads the free world.
Sources:
https://www.worldometers.info/coronavirus/country/us/
https://www.census.gov/quickfacts/FL
https://www.census.gov/quickfacts/CA