I think what's been missing so far is the definition of what makes a good camera.
Simply, the more advanced he user, the more control that will desired by that shooter leaving the camera's controls to itself in the hands of a beginner. That said, this is what is needed from beginner to expert skill:
In the beginning you simply need something to snap and shoot. Next you will want to change lenses. The lenses want to cover from wide angle to telephoto. To begin with you get a mid-range zoom of some sort--the Canon EF series offers the 18-135.
Next, photographer learns about exposure control through ISO, shutter and aperture aka manual. A mid-price camera like the Rebels, or if your budget can handle it the 60D, can handle the lenses and offers manual control.
Next the photographer learns about their own tastes for landscape, sports, street photography, what have you. This is when you purchase better specialty prime lenses or fast zooms, probably after making the decision whether you intend to shoot as a serious hobbyist or professional, so you think about full-frame camera which elevate the budget.
Once shooting with a full-frame gear and proper lenses your chosen subject, you start to learn about your style of shooting and aesthetic. Studying the culture history of photography and perhaps taking a class in medium format photography will greatly aid with developing ability. Shooting a lot of sports, news, candid type stuff will develop your technical ability and speed so you can work creatively. When all of this comes together, you have a photographer.
Some of the best photographers in the world work with a single preferred prime lens and others go by caravan. I have used a lot of gear but I shoot some of my best work with a simple 50, f/1.8.