Is there any point in handing back exams ordered by grade?
No good reasons, only tradition (this is how we've always done it) and sadism (the poorer scoring students should be shamed into doing better). In the US, these days, at the college level at least, it also might now also be considered bordering on a FERPA violation by some. If you announced that the grades were returned in score order, but didn't reveal an actual number, you might get a pass, but I bet you'd get a lot of complaints. If you announced the scores as you did it, you'd definitely be in violation.