What is the experience of going through immigration in Thailand with a DTV visa?

Not a fear-mongering post. Not trying to demean the DTV visa or anything like that, but this is a real experience that I just had less than 5 hours ago when I landed in Phuket. I went through immigration. They asked me what DTV visa I said, "The nomad one," and then the lady is like, "Can you go with this man? They're going to interview you."

They took me to this interview room. They gave me this clipboard and form. They told me to fill it out, and they said there's an email address on the wall to forward my justification for my DTV, which I did, no longer than 30 minutes. They said, "We'll let you go," except another guy who came and sat next to me didn't get so lucky. He ended up getting deported from Australia.