Not the rinnegan itself because obviously rinnegan are OP. I'm talking about his switch-teleport. Ninja have been using substitution jutsu for eons yet he's wasting chakra and using switch teleport. It's literally the same thing as substitution but worse because 1) Substitution jutsu doesn't have a range like his eye. 2) You don't *need* an object to switch with with substitution jutsu. 3) you don't need to be looking at anything to use it. So at the end of shippuden when they had Sasuke restrained, Substitution jutsu would've solved the issue no problem. Plus substitution is a genin level jutsu taught in the academy, so it uses up barely any chakra meanwhile I'm sure a rinnegan power would use up a lot more than that.
They could a done better giving Sasuke a special rinnegan power. And I know it's a special rinnegan power because every rinnegan user has a special power specifically for that person. Momoshiki could absorb, Sasuke teleports, Madara has limbo clones, etc. Sasuke's power was easily the most useless. They coulda done better.