I think the third sentence of the comment you’re replying to answers that
That's going to be hell for Google. Well, maybe not, they have many and decent lawyers.
How is my interpretation incorrect, please? TikTok (or any other website like Google) can show a video to a child in any number of ways - all of which could be considered to be their speech.
That said, this is a statement completely unsubstantiated in the original post or in the post that it links to, or the decision in TFA. It's the poster's opinion stated as if it were a fact or a part of the Judge's ruling.