This discussion is complicated by the loose (ha!) definition of tea bags. There’s about a million different tea bags. Some use denser paper, some are thin. Some are stapled, some are pressed. Some are stringed and some are not. Some are single-use cotton (which I learned about when a local tea brand stopped using them due to cost).

Lipton makes a premium brand that uses a tetrahedral shaped micro-perforated plastic bag that very much could be shedding microplastics.

It’s hard to have a discussion without a clear definition and terminology.