Not sure how many people this would be relevant to here, but DTV for Singaporeans at the embassy in Singapore is still not happening yet.
From what I understand from the broken Thai English, Thailand and Singapore have a bilateral agreement to waive all visa fees, but they have not agreed on anything with DTV. So, ironically, Singapore passport holders can't apply for DTV in Singapore.
TLDR : Answer Summary
Currently, Singapore passport holders are unable to apply for the DTV (Digital Nomad Visa) at the Thai embassy in Singapore, despite a bilateral agreement between Thailand and Singapore waiving visa fees. There seems to be a lack of agreement specifically regarding the DTV visa between the two countries, leading to confusion for applicants.
DTV VISA RESOURCES / SERVICES