You cannot be on holiday/vacation all the the time. The evisa website explicitly mentions DTV is for “workcation” and Soft power. Why should one lie about it?
If you’re here for a holiday, you don’t need DTV.
Thai evisa website literally uses the word “Workcation”. I come here every alternate month stay here for atleast a month or more. Cannot justify it as Tourism/Holiday or Vacation everytime.