I think it's important that you raised your point, but I don't see that Xiaomi providing stock android phones and the ability to unlock the bootloader on their

I think it's important that you raised your point, but I don't see that Xiaomi providing stock android phones and the ability to unlock the bootloader on their MIUI phones forgives them from the clear privacy issues highlighted in the original post, particularly given that the vast majority of their customers stick with the default/popular option.