With all due respect, it is the due of all to share truth, no matter how many times it must be repeated. While there is a true dialogue, it is always good. If you or I do not like the repetitions, we may, just as with books, videos, music, televion, or any other media, elect not to participate in it or with it..
Personally, I will never tire of sharing what I believe to be the teaching of Jesus Christ with any and all, no matter how many times a specific subject is brought up, but this is my thinking, and you are completely entitled to add yours. God bless you always.