I agree with you. For my retirement visa application they asked for:
- Certified original criminal record extract from the applicant's current country of residence, valid for a maximum of 3 months (Which makes sense)
- Original medical certificate from the country in which the application is submitted, stating that the applicant must not have any of the diseases listed in Ministerial Decree No. 14 (B.E 2535), such as (1) leprosy, (2) tuberculosis, (3) Elephantiasis, (4) drug addiction and (5) syphilis in the third phase