It's not as much that they should do it that it's weird that they don't do it. They're already doing a ton of work to try to get people to download fonts from them, supposedly without an ulterior motive other than being helpful, and yet for some reason they seem kinda hesitant to let people actually, you know, actually download them. It's like if Netflix didn't make anyone sign in or charge any money, and went out of their way to get to get people to link to them, but then got shy when someone wanted to download a video to host on their site directly. Being surpsingly unmotivated to do something that ostensibly should be less effort in the long run kind of makes it seem like maybe there's something else going on here.