I don’t understand the fear of BPA. It’s issues is that it’s a xenoestrogen and mimics estrogen in the body. Soy has the exact same property. We removed BPA from infant bottles but still allow soy based formula.
https://academic.oup.com/jcem/article/92/1/196/2598434
Soy is optional and consumed voluntarily, but BPA and other such chemicals have a significantly more potent long term effect, and contaminates everything it touches.