B02018 table unavailable for 1-year estimates on Metro level

Can I get confirmation that the ACS 1-year estimates aren't available for some ancestry/foreign born tables like B02018 on the metro level? I understand that the latest 1-year estimates (2023) is limited to geographies over 65k, but I don't see older 1-year estimates available for B02018. Can I get a reasoning if (1) is this supposed to happen and (2) why this is?