From the article:

"These chemicals are not just additives; they may be migrating from the headphones into our body," said Karolina Brabcová, chemical expert at Arnika. "Daily use—especially during exercise when heat and sweat are present—accelerates this migration directly to the skin. Although there is no immediate health risk, long-term exposures, especially vulnerable groups like teenagers, are of great concern. There is no 'safe' level for endocrine disruptors that mimic our natural hormones."

You may not be familiar with the prevalence of "hormone patches". Absorption through the skin is a common medical delivery method.

I can’t stop myself from chewing on the little rubber cups that come in the ends of earbuds. I guess the slightly sweet synthetic taste is BPAs.

I'm wondering the same. There are some master&dynamic models that are mostly made from metal/leather, but they're above my usual price range. I'm not really an audiophile, I'll settle for lower audio quality, but I'd prefer to wear one that doesn't have me constantly guessing whether I'm poisoning myself.

Annex 1 of the study lists the test results for individual brands/models. There are several, including Airpods, that get an all-green evaluation score.