I can well believe they are obsolete. I bought a set of Edition 30 ones not long after I bought my car in 2012, thinking mine were faded, but no - the red trim was the same. Didn't realise at the time that 3 & 5 dr ones were different.
After many years, sold my 5-dr ones to a guy on here a couple of months back who was restoring an ED30 and he said they were obsolete from the dealer.
I guess - just keep an eye on ebay, and VW seem to be slowly adding more and more mk5 stuff to their store in Wolfsburg (
https://www.volkswagen-classic-parts.de/en/), so maybe they will crop up on there sometime soon...