I have always been told that one starts at the farthest away bleeder and then to the next longest...(30 years)
Perhaps, since there is some pushback ( more in standard brakes) it provides a clean supply for the other three with no chance of old fluid backing up to a junction and being left in the system ....if one uses enough fluid and makes sure it is clean.. and checks it twice I doubt it makes any difference...
Well, maybe it makes a difference on air bubbles... ?
I agree with Motorhead... the rule is that you always do stuff to brakes to one axle at a time.. both front or both rear or all of them... but never to one brake...