I got my DTV yesterday in Laos. I applied as a freelance digital nomad. It was all quite straightforward. I went to the embassy to pay last Tuesday, then on Friday they notified me that I would be interviewed this Wednesday (Thursday and Monday were Thai public holidays, so that probably slowed things down). The interview was really quick, they just asked me to confirm what I do and asked to see my bank balance in the bank app on my phone. They also asked if I already rent a place in Thailand. About an hour later my visa was approved.
Before going to Laos, I paid a small fee to an agency in Bangkok that helped me make sure my application was strong enough and apply through the official website, but I still had to come here, pay and do the interview in person. I used the agency partly because I was unsure my application would be accepted, as I work freelance. The agency were very helpful and told me to provide examples of my work and a letter explaining what I do.
Today I entered Thailand overland from Laos. The border official didn't ask me a single question.