Something related that you CAN do, and that is more likely to make a difference, is not ever to heat up plastic in a microwave, wash it in a dishwasher, or cook with plastic utensils. Basically, the softening agents in a lot of plastics aren’t chemically bonded to the rest of the polymers, and heating the plastic makes those chemicals ready to leach into whatever food contacts them. That’s a huge class of chemicals, none of which are LD-50-level dangerous, but many of which have been associated with hormonal changes, microbiome issues, and a whole host of other stuff that fits in the general category of “Why do organisms work differently than they did 100 years ago?”
Notably this is about plasticizers, a different thing than microplastics.
This reddit thread has the claim:
Notably this is about plasticizers, a different thing than microplastics.