>...the app is just doing its default<
Apps and code don't do anything they are not told to do.
>since most people does not like the default sending behavior, we change the default to not sending unless you set it up your own personalized preference for this.<
No one with even basic intelligence would write code to do this. The guy who kept posting a message for every one he received is simply as irked as everyone else. I unsubscribed to this thread, which I never subscribed to in the first place. If I keep getting messages, then I'll start replying for every one I receive too.