Have you ever tried to drive a wood screw with a Leatherman? Not my definition of "really, really well." Works about like MS word.
Never said it didn't have its limitations.
Virgin wood, no - but unscrewing and re-screwing in wood and metal, yep, along with a dozen other things, all far more conveniently than digging out a tool chest. But major construction, no, I'd definitely go with dedicated tools, but kinda difficult to drag a big toolbox on long hikes or on a mountain bike.
Point being, there are many situations where a multi-tool, whether hardware or software, is a very handy thing (just ask MacGyver).
Mind you, Office is NOT such a tool, IMO. It bears more resemblance to that big toolbox you have to drag around everywhere, but when you really need a tool and open it up it often either lets you down or you spend hours looking for the right tool (or the lid slams down on your fingers while you're reaching for the tool you finally did find).
That said, it too has its uses.