Instead of banning plastics we should have invested in waste management infrastructure in the developing countries where almost all the ocean plastic originates from. Probably would have been cheaper too.
[1]: https://www.ncbi.nlm.nih.gov/labs/pmc/articles/PMC3222987/
[2]: https://www.ncbi.nlm.nih.gov/labs/pmc/articles/PMC3572204/
We've removed BPA, but there are plenty of other hormone analogues we're exposed to. Soy, for instance.
Endocrine alteration is probably nowhere near as bad as the particulate matter we're breathing in, the amount of sugar we're consuming, or the time we're spending on our phones.
All this to say that I don't think "plastics as hormones" is as bad as the other stuff we have to worry about. We should triage it appropriately.
Which, like it or not, is one of the best things we can do for the environment.