Regarding losing the mesh, I can only think of such reports (e.g. a German language topic here) with regard to Fairphone’s previous TWS earbuds (not the Fairbuds). My own Fairphone TWS earbuds have lost both mesh parts a long time ago, and while others found fitting mesh online, I have just done without the mesh for 2-3 years now and have not noticed any issue with functionality so far. (Note the TWS earbuds had round mesh unlike the Fairbuds’ elliptical shape mesh.)