Aside from the bevelled edge you did mention, you've centred most of your argument around the arbour nut. There's much more practical reasons for left tilt other than that which I'd consider a minor concern. After all, how often does the blade get changed by the average woodworker?
1) The most important reason for left tilt (which alluded to) with a bevelled edge on a left tilt and that is that it wouldn't bind under the bottom edge of the fence where there's space to get caught, minimal as it is. 2) The second thing is that when cutting a bevelled edge, it's leaning over the blade cutting it not and not prone to getting trapped under an angled blade leaning over it causing increased potential for kickback. 3) A third reason is when cutting a bevelled edge, possible tear-out is consigned to the inner edge and not the sharp edge, making for sharper tear-out free bevel cuts. 4) Another minor consideration is that a tilted motor takes up space and a left tilt would take up cabinet space under extension wing area where space is often wasted anyway. A few inches floor space makes a big difference to many space limited woodworkers.All of these things are considerations to avoid when using a right tilt table saw with the fence on the right side of the blade.
IMHO.