Your home's Internet router is an idiot. It is the one device you have that, theoretically, could accurately tell you how fast your Internet connection is over time, and who in your house is using up the bandwidth. But it does none of that.
It's not in the name of simplicity, either. The software that's baked into demented routers is not, for the most part, user-friendly. It's just dumb, because dumb is cheap.