I don’t believe that is true. I prefer more hollow grinds but my heavier grinds are just as sharp. Defies logic.I have read in quite a few places discussing SR grinds, including on B&B, that the more hollow the grind, the keener the edge can be honed. Hollowness of the grind doesn't affect the bevel angle (does it?).
Assuming that all other factors are equal, how can the hollowness of the blade's grind affect the keenness of the edge?
Please keep your answers simple. I'm only an engineer.