Your source is fine 👍
Yours says that ~90% of their users are not from the US.
Despite the US being Tiktoks largest single-country user base they still only make up a sliver of their monthly-active users.
So just over 4% of the worlds population is making up 10% of the usage. I suppose the owners shouldn’t care about that sliver of the users. They should care more about the smaller slivers, got it.
Tiktok is one of the largest social media apps on earth, they’re not selling it over a sliver. Why does it matter how much bigger the sliver is than the other ones? Are you stupid?