No offense, Mike, but... humbug!
I shoot exclusively in colour and turn my shots into monochrome. Would you say my shots are poor or lack the finesse, depth and impact of a true B&W shots?
There's no need for it to be either B&W or colour; they're not mutually exclusive. For me the whole point of shooting colour is that I leave the choice open to go either way. And I don't need to worry about having the wrong film in my camera when I stumble upon a scene that is just begging for colour or B&W. The film inside the camera is just a medium to capture the image. In your head, however, is where you "see" the image, either in B&W or in colour.
The whole point of using a digital darkroom is that one can experiment with every conceiveable filter effect. Ansel Adams would probably have jumped into the digital darkroom faster than anyone and not have lingered much in a traditional darkroom, if he had had the chance. Though he was an expert in the traditional darkroom methods he was just as knowledgeable about the emerging digital opportunities during his life time.
The home processing argument is IMO similarly flawed. I've done some home processing and find it tedious, fraught with too narrow margins, and needing too much experimenting to get satisfactory results. Only after you've found a soup that works with your film you get to relax a bit, until you change film or developer; then the whole rollercoaster start over again.
So, though B&W is the way to go for some, it's IMO ridiculous to advice someone to shoot exclusively B&W because it's the only way to get good shots. There's a lot of B&W crap, and very little supremely good B&W work, and it's the same for colour (and equally so whether you shoot (d)SLR, RF, MF or LF) . It's not the medium that you shoot that makes the difference, or what camera, or what scanner, or what developer. It's how well you understand your choosen medium, your camera, your gear, your (digital) darkroom methods and techniques, and what it takes to make an image that speaks. That understanding can IMO only come from practise, practise, practise with whatever you are using at the moment.