NGS and NIST announced in 2019 that after 2022, the survey foot (based on the 1893 definition of a foot) should no longer be used and all geodetic surveying should be based on the international foot (based on the 1959 definition of a foot). They released the following revised unit conversions: https://www.nist.gov/pml/us-surveyfoot/revised-unit-conversion-factors

Pint is still using the old conversions: https://github.com/hgrecco/pint/blob/29a139f0c31a056e15fbb13e3e6f827b56c4a9bb/pint/default_en.txt#L541C8-L541C24