[Kadin]

Sure, and that's probably happening as well.

But it shows a level of not-giving-a-fuck if they're just leaving not-even-well-hidden "backdoors" in, so people in China can get access.

It suggests to me that the software engineers writing this stuff don't really think of ByteDance US or the US version of TikTok as being any different from ByteDance China. Because of course they don't: I don't think ByteDance itself, or its leadership, does. The whole idea of separating the company internally is a sham, and it's almost always a sham when companies claim to do internal firewalling or controls like that. (See also: pre-2008 financial companies that did both consulting and accounting/audit, and claimed they never talked across that line. Of course they did!)

TikTok is a shining example of both China being China (no real private/public sector separation, lying as standard practice, economic policy is just war by other means) and the US being the US (everything is for sale, everyone's loyalty can be rented, all laws are negotiable, workers / average people exist to be exploited rather than protected, if it's profitable it can't be that wrong)... and we wonder why it's a trainwreck for average users.