@jeffmarc In the absence of more research, could it be more something like "we don't *know* if the statistical correlation with egg consumption is meaningful, so maybe limit yourself to ≤3/week if you want to stay on the safe side."?

It's mainly the difference between "may be" (caution) and "are" (a high degree of certainty). We tend to jump from the former to the latter a bit quickly in layperson discussions.