Like what extra muscle cells can do?
Removing non-visceral fat cells does not help in anyway metabolically, but losing weight via other means does. This suggests that higher fat cell count in the body is not what is causing metabolic harm but it’s rather the larger fat cell volume.
So maybe we don’t really want the glucose spikes to result in increasing the fat cell volume. Perhaps it does act as a buffer against worsening insulin resistance for a short time though.
I don’t know / haven’t researched what gives rise to extra fat cells. Also I don’t know metabolic differences between healthy people (with no visceral fat) but with different subcutaneous fat cell counts.