Anonymous participant 718 I think that is just a mistaken omission. I would not read too much into it. All visas mentioned seem to be Immigration Department Visas whereas DTV is MFA. Let's not speculate.
It is safe. That article does not refer to it but that is just an omissions. People from certain countries might be looked at more closely but they will be on any visa type
No reports of any issues at Nong Khai. Chiang Mai agent asking for border fees for another Laos crossing if you want same day. No need for fee for 2 night stay.
Anonymous participant 457 The "Safe Entry" fee usually includes both countries as well. It can be inconvenient to get stuck in "No mans land" as has happened before.