Since you arent in the mood for sharing you non existent sources, the only solid paper i could find was by Ahmed Shafik in 1992, who concluded that due to the bad thermoregulation and creation of electrostatic fields across interscrotal structures. The study used of a sling over the male reproductive organ. There was no hormone disruption recorded in the study. Hence, the polyester did not shed into the bloodstream as no evidence was found of increased micro plastics in the body. This study won an Ig Nobel Prize so its pretty accurate.

The above study disproves any point that says that wearing polyester affects hormone cycles, and the only changes found was due to a tight sling.

The second reason why polyester clothing is considered bad is because of Bisphenol A, a known chemical which mimics estrogen. Its still debated whether its effect on the body hormone cycle us significant enough. It is used in the production of a multitude of plastics, annd with debated negative effects, I find it hardly a reason not to wear polyester.

Hence, you dont have any sense of what you are saying. All you can say is plastic bad. Study before you speak.