That's easy to say, but hard to actually do. As much as I hate spamming mailing lists, it's not like I'm going to spend two days carefully specifying answering rules for every autoreply message target in my Outlook that I must use at work. So, the burden of doing that properly is on Microsoft or company IT to make sure who will get the auto reply, while all user can and has to do is to tick a check box and type an actual message.