My reading of it is they didn't bother to take the motivation of the law into account (suppression of speech), and only took the law "as written" to decide.
> We need not decide
whether that exclusion is content based. The question be-
fore the Court is whether the Act violates the First Amend-
ment as applied to petitioners. To answer that question, we
look to the provisions of the Act that give rise to the effective
TikTok ban that petitioners argue burdens their First
Amendment rights...
> We need not decide whether that exclusion is content based. The question be- fore the Court is whether the Act violates the First Amend- ment as applied to petitioners. To answer that question, we look to the provisions of the Act that give rise to the effective TikTok ban that petitioners argue burdens their First Amendment rights...