Nyah, it just seems that way. The reference was to the SCOTUS decision itself. There were three concurring opinions, the first of which was penned by Barrett and joined by Kavanaugh and Breyer. It's rather brief. Here's an explicit link:
https://www.supremecourt.gov/opinions/20pdf/19-123_g3bi.pdf
Note that the link is from the OP article—yep, yours
—specifically from this paragraph:
Chief Justice John Roberts wrote the
opinion of the court, which was joined by five other justices. Three members of the court's conservative bloc filed concurring opinions, agreeing with the judgment but saying they would have gone even further in protecting the religious liberty rights of the agency. There were no dissenting opinions.
The article, including that paragraph, rather misrepresents that first opinion, whose first paragraph was hers alone. They may not agree with Smith, but neither are they inclined to tackle it, perhaps ever.