it's not obvious that it's significant. we shouldn't waste our time worrying about tiny things. for example there is uranium in the ocean. it's a lot as an absolute figure. but it's very dilute, nothing to worry about.
pick one study or argument, which is the best, and i'll look into it more carefully.
the wikipedia article is lengthy, and contains errors, but if i point one out you will presumably say there's another part that's better. that's fine, but let's skip that step and go straight to the part you wish to stand behind.
Doesn't seem worth the effort for something I'm really convinced is right beyond a shadow of a doubt. I don't even think being proven wrong could convince me to change. It seems like a good idea for society to say bad things about tobacco.
I'll leave the argument at "fix the wikipedia article."
