A few months ago I made the argument that working age and young adults (18-49) should be prioritized for the COVID-19 vaccine.
TL;DR I was wrong

Here's why I made the argument and why I changed by view:

This is the 3rd major surge of SARS-CoV-2 in the U.S. In each surge, the data supports that the majority of transmission events were driven by young adults ==> working age ==> rest of the community. Here's Florida an example in the summer:

This is at least partially explained by the fact that young/working age adults are, well, working. They frequently interact with new ppl, putting them at higher risk for contracting SARS-CoV-2. They are also highly mobile and can bring the virus into their communities.

This demographic also tends to have high vaccine responsiveness - they get the jab and develop strong immune responses. The flu vaccine is a great example to illustrate this:

So taken together, I thought vaccinating the group responsible for most transmission events, while also the group that can mount one of the strongest immune responses would be the most effective way to blunt the pandemic.
Then the data from Pfizer and Moderna came out.

These vaccines showed remarkably consistent protection across age groups. I was stunned.

So I agree that elderly should be prioritized, along with frontline workers who interact with them and those working with the virus.

It's OK to change your views. I'm glad mine were wrong.