Yes, but it is advised to give that feedback... the more feedback there is, the stronger the case.Glad they are at least aware of the complaints.
This how it works for Apple. Not only for customers but also for business-to-business.
For my line of work I also have contact with Apple for my company and there it works the same, only there my complaints are noted as a company and they themself (Apple) will register it and handle it for me. But its is the same procedure.. adding "evidence" and building cases to get it higher in the tree.