It’s a risk area because the risks of BPA likely exist in whatever they are using.

I always assume there’s something nasty under the surface with plastic drink and serving ware — like 6 months after the first BPA studies hit the press, GE sold its plastic and silicone divisions.

Producing high-purity plastics that don't contain any of the many usually toxic ingredients is quite difficult and requires finely tuned and monitored processes. There is a huge price differential between plastics used for consumer garbage and e.g. plastics used for industrial piping and fixtures (when they're nominally the same plastic) which is gladly paid for.