A, especially, is atrocious and caused multiple small companies I know to ditch GA entirely. They had years of GA data that is impossible to export without BigQ

A, especially, is atrocious and caused multiple small companies I know to ditch GA entirely. They had years of GA data that is impossible to export without BigQuery shenanigans. It is impossible to believe a team as well-funded as Analytics could/would not find a way to automatically migrate gtag.js to GA4. They should have made the upgrade transparent by simply converting requests behind the scenes so legacy analytics properties could exist perpetually, while forcing new property registrations to use GA4.