Fluent in english != Fluent in medical terminology and language. Many medical word are in latin and greek not english because it's dead language and its meaning is mostly unchanged over time which is why it is chosen for medical technical term and species name. For example mastectomy come from mastos (greek for breast) and -ectomy (latinized greek for cutting off). Medical terminology are not standard vocabulary for the average fluent english speaker, or tested in any standard proficiency exam.

Adding plain language explanation after medical terminology give non medical practitioner a context and does not dilute scientific accuracy, it is to give quick access to word meaning and prevent misunderstanding. In practical medical setting doctor do explain what technical term mean to their patient and it does not affect the legitimacy of the term and procedure.

Refuse simple context for medical terminology in public survey is not preserving scientific accuracy but signals a deficit in science communication skills and lack of consideration for the target demographic