The Post Master General debunked your whole Conspiracy theory on National TV. You can no longer try to use CNN fake news talking points. More mailboxes were removed under Obama, than Trump. They have the exact number.
Stop being led halt-truths by CNN... they are only telling you Half the story, on purpose.
My experience with the post office matches that of m3tavision. I've been using them for decades, and not once have they lost anything, and are very rarely more than a day or two late with any delivery. The postmaster general is one of Trump's bought and paid for lackeys. Of course he's going to say that everything is fine - and you are going to be stupid enough to buy his BS.