I used to think so too but then there was a study that any kind of stress (heating, mechanical, cooling) makes any kind of plastic release microplastics into the food. With heating being the worst, cooling “the best”

Of course I can’t find it now, I guess it might have been after the pandemic (meaning - two eternities for the way my memory works, there’s no chance I can remember what were the noticeable words in the title). But here’s something similar https://pubs.acs.org/esthag/article-abstract/57/26/9782/316425/Assessing-the-Release-of-Microplastics-and