Nothing in the article cites a reason for why the data was sent. In fact the article specifically mentions that this data being sent was to circumvent attempts to limit the transmission of American citizens data to a hostile foreign government.
We should ban the sale and transmission of Americans sensitive data to hostile foreign powers regardless of the company. I support this action because it would help do that, and I would support (and I do advocate for) more broad data privacy legislation. If you support data privacy why would you not support a bill which enhances data privacy, even if it doesn't go far enough?
You started this discussion with me by saying that tiktok isnt obligated to send data, when I provided sourcing to that effect you brought up corporate structure questions asking if the data was being sent. I provided a source showing that it is transmitted through those avenues regardless. Now your argument is that because we don't have totally comprehensive data privacy regulation we can just ignore the fact that tiktok is sending American citizens private data to a hostile foreign power? If you think that isn't a big deal just say so, then we can have an honest conversation.