That is simply a topical remark within the judgement denying the injunction. It isn't relevant to what is enforceable or being enforced. The Act in question doesn't contain wording that implies that TikTok would have been required to be taken immediately offline, as the act requires enforcement by the FTC, which hasn't yet moved on the matter.

https://www.congress.gov/bill/118th-congress/house-bill/7520...