Yeah, I was curoius about that too. I don't see how that can be the case. Certainly for the same framing and aperture, the 7D will have less OOF blur - but bokeh is the quality of that blur, and I had thought that was a property of the lens for the most part. The one area in which sensor size might play a role in bokeh is the 'cat's-eye' shapes of OOF highlights, which result from optical vignetting - but in that case, the crop sensor would be better than FF (assuming we're comparing the same lens, but that's the only possible relevant comparison for bokeh), since the smaller sensor reduces vignetting.
Yes, with one caveat: if the lenses being used on FF and crop have the same diameter of aperture, and the background is far enough in the distance, then background blur will be identical. Blur near the plane of focus is controlled by DoF. Blur far outside the plane of focus is controlled by physical aperture size. (Not the f-stop, but the actual size of the opening for the lens at the given f-stop.)
This doesn't often happen indoors because the background is generally too close. For outdoor shots though you can end up with the same background blur on FF and crop. Subject DoF will still be more shallow on FF, though that may or may not be desirable.