Excerpt from this post on Reddit:
I watched the new video of MKBHD about the MacBook. There he is telling Siri “open my Downloads folder” and she responds with “Heres that Folder, good stuff in there”. I don’t know if its just me but I find this very annoying and useless. Who wants to hear this all the time?
In my opinion there should be an option to turn off all remarks of Siri