Sideloading doesn't work if an extremely popular app can't handle transactions in a proper way. Creators won't get paid, the ecosystem will fall. I bet US government would ban Tiktok from banks and billing systems.
All that would do is drive off the "blue checkmark" class of uploaders, good riddance. That's not what people are on TikTok to view. Note that the TikTok influencers have never made it as big as the Youtube era of influencers, and that's a good thing for society.
