1. Maybe I didn't read all of the data in the OP's twitter thread closely enough, but it doesn't look to me like CDC is prioritizing essential workers over the elderly because of race. Rather, diversity is one of the many factors that was considered in a point system to help determine their priorities. If it is just one of many contributing factors, this tweet is being unnecessarily alarmist.
2. As RedDenver pointed out a few posts above, racial minorities have been disproportionally impacted by the pandemic, so this is something that should be considered in the response (but not the only thing of course).
3. This year, we have seen right-leaning politicians and media-types making statements that
elderly should be willing to sacrifice themselves for the good of the economy, and so many elderly folks have died during this pandemic because so many other a$$holes in this country refused to take the virus seriously.
4. That guy's Twitter feed is filled with sexism, homophobia, and a guy using his "Bidenbucks" to stock up on Ammonium Nitrate.
5. The whole point of this guy's tweet seems like a dog whistle. I'm not convinced that the people that are going to be promoting this tweet and this idea are genuinely concerned about justice and the well-being of the elderly.
Just my initial impressions, maybe I missed something though.