That may be true, but unfortunately research is showing plasticizers of many varieties (including those used in "BPA Free" plastics), are endocrine disruptors.
http://www.sciencedirect.com/science/article/pii/S0016648014...
http://www.sciencedirect.com/science/article/pii/S0016648014...
http://myplasticfreelife.com/2011/04/bpa-free-does-not-mean-...
TL;DR: Just because plastic is BPA free, doesn't mean it is safe or even better.