I doubt you asked Mazda, you probably asked your dealer of Mazda customer services in your contry.No, they don’t see it as a defect, I asked Mazda if they are or will be incorporating the sound proofing mat on the production line and they literally said it was not a defect, but just an improvement for unsatisfied clients. Same about the shock absorbers.
Thankfully being that i own two of them now i have a good knowledge basis and contacts, but believe what you will. Dosent bother me.
This forum has certainly made me understand Brexit though 🤣