Nothing in that post indicates that they are no longer available from Omega. At the end of 2015 Omega stopped selling parts to third party resellers like Cousins in the UK, Otto Frei in the US, and others all over the world. Their supply of parts were drying up, and that's where people were buying their parts from. All along those places were often charging more than Omega would charge for the same parts, but people kept recommending them as places to buy from, and people kept following those recommendations blindly.
Very few ever bothered to ask their local AD or Boutique, but since those parts were never restricted parts, anyone could buy them from the AD or OB. So again people believe what they see written as you have, without actually contacting Omega directly to find out the real answer. I don't know why people do this, but I suspect you can explain it better than I can...
Cheers, Al
