Earlier quoted context omitted.
This appears to be untrue, based on a cursory google search.
"The flavor enhancers and preservatives BHA and BHT are subject to severe restrictions in Europe but are widely used in American food products." https://www.nytimes.com/2018/12/28/well/eat/food-additives-b...
They're "approved" as E320 and E321 according to: https://www.food.gov.uk/business-guidance/approved-additives...