What are you even talking about? What "industry" depends on calling attention to lead poisoning? As best as I can tell not many people care about issues with lead.
Idk, it seems reasonably obvious that there is activism and litigation and nonprofits and bureaucracies all studying environmental issues, and these are all operated by people, many of whom get more money and attention was a result of the concerns they raise. There is some opportunity for a conflict of interest.
One question, though, is whether they take that opportunity. Another more salient question is whether the Wall Street Journal, of all the possible papers, has fallen under the influence of such groups.
And it certainly seems as if they’ve found some people with elevated lead levels in blood, and ground and water samples that exceed EPA limits.