Dude, quit with the legal editing. It's a reply letter, not a legal brief. The point is not to win in court, it's to intimidate the other side. Your version might be clearer and more succinct, but my eyes still glazed over by the end.
And calling each component part of a plain-language sentence superfluous, pedantic, and unprofessional is itself superfluous, pedantic, and unprofessional. Pot, meet kettle.
And calling each component part of a plain-language sentence superfluous, pedantic, and unprofessional is itself superfluous, pedantic, and unprofessional. Pot, meet kettle.