The problem isn't they forget, it's more along the lines of their culture. In China, they do the {thing} first then apologise.
On a related note, TikTok is just a rebranded version of DouYin [0] which was originally built by a small group of young programmers called Beijing Shaking Youth [1]. It wasn't until their recent funding [2] they sent up an office in the USA by which time the damage had already been done. Not only do they violate laws their app is riddled with dark patterns by US standards (all of which btw is normal in China).
If you go on LinkedIn and look up Jobs in Los Angeles you'll notice TikTok has 1200+ open positions. You'll also notice they're hiring people specifically to develop policies for each region.
[1] https://www.reddit.com/r/OutOfTheLoop/comments/9iy84y/whats_...
[2] https://techcrunch.com/2018/08/08/bytedance-is-raising-2-5b-...