I can't find that expression anywhere in the Lead Stories article. Facebook outright labelled the BMJ article "false" and containing "false information".
Beyond that, should fact-checkers really become an "optics police"? For every single news story, you will have (wild) misinterpretations on social media. It becomes too convenient if a fact-checker can point to those, and then have Facebook limit the spread of the original story. This is a question of poor FDA oversight. There have been several instances throughout this pandemic: see the recent FDA resignations, and the GAO report[0]. Oversight is not about pro vs anti vaccine, this is about people's health[1]. Oversight should always be robust, even in emergency situations.
[0]: https://www.raps.org/news-and-articles/news-articles/2021/11...
[1]: story from Japan https://www.theguardian.com/world/2021/sep/07/third-person-d...