Re: It's garbage
Try it. Open Outlook, pick up an email with the mouse and drag it to the desktop. You'll see the behaviour the OP is referring to.
I doubt I've don that more than once since I moved from Lotus Notes in 2003, but that's the point of this thread. Users use features in lots of different ways and those features are important to those users.
I discovered yesterday that new Teams can't alert you when a user comes back online, which was occasionally very useful to me. Why it's not there is anybody's guess, but I suppose MS knows how much it was used. I don't care if I'm in a minority of one, it was a handy feature for me.