Why are Shiny Koraidon and Miraidon not distributed via Internet or Tera Raids instead of code cards

I don't have any semblance of hope for this getting addressed by the Pokémon Company but asking it regardless as to: why are Shiny Koraidon and Miraidon distributed via code cards instead of the via Internet option or through Tera Raids? I for one don't have any proper distribution of Pokémon in my company for over a decade and had therefore signed up for United States as a region and had been getting my games for that region. To have any hope of accessing these code cards I need to fly out for 8-14 hours (either to United States or Japan as i need a visa for continental Europe ie France) which is obviously not feasible…