Question about EF-EOS R - 329320

I wanted to buy an R6 for Christmas (the R5 is just too expensive for me as a hobby) but... without the RF-EF adapter it doesn't make sense as I can't use my old EF lenses anymore but you can't get the adapters (plural, yes, all variations) anymore .... don't quite get it somehow - such an adapter is now a part you would least expect to be affected by a supply shortage.

Seems to be generally not available in Switzerland www.toppreise.ch/preisvergleich/Konverter-Adapter/CANON-Bajo...