The article you cite says,
This study does not dispute the safety of vaccines but reinforces the need to study long-term effects of early exposure to neuro-toxic substances on the developing brain.
The toxicity of Al is much lower than that of thimerosal
Mild post-vaccine symptoms in young infants, especially neonates, are non-specific and considered tolerable; rare (neurologic) adverse effects are unlikely to occur as a result of adjuvant-Al per se or in combination with thimerosal-Hg.
From the article I didn't gather what type of exposure was more worrying to the authors---acute or chronic. They seem to admit acute exposure has been proven safe, but on the other hand they dare not make any definite statements on chronic exposure. And above all, they never suggest that vaccinations should be stopped: in their conclusion they make it very clear that the purpose of understanding better the toxicity profile of vaccines is for increasing trust in vaccination.
in their conclusion they make it very clear that the purpose of understanding better the toxicity profile of vaccines is for increasing trust in vaccination.
That's a huge red flag right there. It means they've already decided what research must prove.
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.