This claim is about the private beliefs of unnamed British individuals working at the European Commission, which are not publicly observable or independently verifiable. Public sources do show that Commission staff are civil servants bound by duties of independence, impartiality, objectivity and loyalty, and that EU posts are open to EU citizens, but those sources do not establish that any British staff “hate everything this country has ever stood for.” That makes the claim not publicly verifiable. (commission.europa.eu) Sources: European Commission, “Staff and ethics” (`https://commission.europa.eu/about/service-standards-and-principles/ethics-and-good-administration/staff-and-ethics_en`); European Commission, “Commission staff” (`https://commission.europa.eu/about/organisation/commission-staff_en`); EU Careers, “Eligibility” (`https://eu-careers.europa.eu/en/eligibility`).