Were there two separate paths out of Africa?

It makes no sense to me for the Southern Route out of Africa to be the only route. Why would anyone cross into Yemen, cross Oman into Southern Pakistan, and turn left instead of right?

My belief - fisherman from the coasts of east Africa cross the Arabian Peninsula during humid periods. Nearby, hunters from South Sudan travel north along the Nile Valley next to the mountains, into the Levant. Meanwhile, Arabia retains people as well.

This could explain the comparatively higher proportion of seafood that makes up the meat in dishes from Asia, lower levels of animal husbandry, and higher levels of surviving ice-age megafauna.