@Tritumi

Thanks for pointing out the change to the rules for returning Americans. Under the current rules, I can return to the US under the same rules as the vaccinated, that is, provide a test done within 3 days. Under the new rules, I will be treated differently than the vaccinated, which obviously would require me to provide my vax status. That was the signal I've been waiting for. Adjusting my travel plans accordingly. Thanks again for the heads-up.