The deduction is faulty.

PFAS are a specific family of chemicals unsuitable for this application.

No significant amount of microplastics is likely to develop from the mild abrasion of opening and closing a wine bottle a handful of times. And if your risk tolerance is so low that you are worried about that largely theoretical concern, you probably should not be drinking wine at all (because we have quite concrete evidence that alcohol is unhealthy -- unlike microplastics).

I would be (much) more worried about chunks of plastic getting in my wine from those fake cork products than from screw tops.