Please show me the requirements for a soft power DTV. What? You can’t? Is that because every Thai Embassy sets their own requirements? Every Embassy criteria is unique to them. There are ED visas available for Muay Thai but the DTV is being issued for 2 week courses. Suggest you research more before making sweeping statements.
Yes provided you download the additional insurance form from Immigration and send it to ADAC and they are prepared to fill it out and officially stamp it confirming their liability which you then have to get translated and legalised (forget it) and just buy a policy from the nominated Thai insurance company.