My wife pointed out and I feel dumb for not realizing it because I know this myself, you never heat baby food much past 30 seconds, certainly not for 3 minutes at highest setting. Babies generally eat baby food at room temperature to body temperature, and anything outside that is considered extreme to a baby's sensitive nervous system, not to mention you wouldn't want to risk lava spots that might burn their mouths. That adds a rather unrealistic element to the study.
It's far more likely to effect people eating microwave dinners, reheating food/meals in plastic containers, and even then those are different tougher plastics, that said it might be reason enough to just invest in glass containers for food storage.