That's false. The ones you can get here in Slovenia don't have them. I've personally helped quite a few friends sideload them. I also remember how shocked people were to find out there's no YouTube or Play Store after buying a Huawei or Xiaomi phone when that first came into effect.
Probably because they are bootleg imports in a very small country.
Chinese telephones legally imported usually have them in most relevant big markets like Indonesia, India, Brazil, etc.
Correct, same in Germany. Here is a photo I shot last December in an electronics store. Aurora Store is now official, I guess.
https://imgur.com/a/v6zaRYo