Getting more exposure from one place doesn't make getting less exposure from another not an issue worth investigating. Both things can be problems at the same time, especially when dealing with a substance for which the healthiest amount of exposure is zero. Lead anywhere is worth investigation and study.
I'm not about to give up shooting over it, but if I can easily make it safer for little effort then I see no reason not to. And I don't read anywhere in any of this that gun owners are being painted as idiots, it just seems like you're upset that people are taking a thing seriously that you don't personally take seriously.
And I agree. I would love to see data on lead on clothing at ranges and lead exposure for military recruits. That would be extremely valuable!