I disagree, because, that's like me telling you "The word 'Cancer' needs to die." etc.
That would imply you'd be required to tell me the specific cancer you refer to when you say "you aren't going to get cancer from PLA or Teflon" etc.
General terms exist for a reason.
To stay with your example, it would be like discouraging the media from saying "cancer is cured" when they actually might mean "this specific type of lung cancer has a cure". To bring it back to "plastic", the media could focus on saying things like "teflon coating encourages these negative reactions..." as opposed to "plastics are poisoning us" which is way too vague to matter.
And on the case of plastics, that reason is that they are molded by the same processes.
It's about as relevant as talking about "metal contamination" of food when you are measuring mercury.