They didn't have any data on the toxicities of injected aluminum. They had none. They had never injected an animal and collected any. The only data they had was on oral administration. My clarification is 100% accurate, of what the article conveys if you put the quote in context.
You seem to think the fact that they minimize the extent of their incompetence or corruption by using the euphimism "scant" for "none" is more important than the facts (1) that they had been injecting aluminum into tiny kids for 70 years before checking the toxicity, and (2) since then all of the published peer reviewed data shows its doing great damage, and (3) all of the safety review boards and safety surveys are simply and blithely ignoring the scientific literature on the subject, not bothering to cite it or to rebut it or to offer alternative studies on the issue.
For example, what would be inappropriately off topic to post to LessWrong discussion about?
I couldn't find an answer in the FAQ. (Perhaps it'd be worth adding one.) The closest I could find was this:
However "rationality" can be interpreted broadly enough that rational discussion of anything would count, and my experience reading LW is compatible with this interpretation being applied by posters. Indeed my experience seems to suggest that practically everything is on topic; political discussion of certain sorts is frowned upon, but not due to being off topic. People often post about things far removed from the topics of interest. And some of these topics are very broad: it seems that a lot of material about self-improvement is acceptable, for instance.