From what I understand, it's just banned in the App Store for people using US IPs. You could still access it from the website or use a alternate app store like Fdroid. Kids searching ways to access Tiktok after the ban will learn more about using the internet.
Hopefully some smart people working for Tiktok will put up an "unofficial" page with good SEO keyphrases kids will use, with instructions on how to bypass the ban. A good worded Reddit post could even do the job.
OK... Back to the nude but censored thanks to fupa posts!