I'd be with you if there were any indication why TikTok specifically would be banned while other Chinese social media entities or those from other countries tha

I'd be with you if there were any indication why TikTok specifically would be banned while other Chinese social media entities or those from other countries that might be deemed national security threats are not - apart from sheer popularity, which would likely be resolved by said tariff. The US did not merely ban Huawei, it was part of a broader national security concern, where ZTE was also banned as part of the equation, and conceivably other major Chinese telecommunications firms with a strong enough foothold in the US would have been (or will be in the future) as well. Not to mention, use of TikTok is entirely an individual choice, a telephone network user does not choose (or have knowledge of) the origin of the devices their communications are transmitted through.