Uber GPS instructed my driver to go on the off ramp of the interstate

I needed to get a 90 mile ride home the other day. (Thankfully someone accepted and I filled up his car for 30 bucks and gave him a $20 tip on top of the $80 fee)

Anyway on the way home driving up McGinnis Ferry road in GA I was trying to get to i-85 North. For some reason I just so happened to be paying attention to his GPS and noticed it was trying to make him turn right when I normally turn left. I casually asked where he's going and he said he's following the directions to get on 85, there was some recent construction in the area so part of me thought maybe there was a new on-ramp I wasn't aware of, but nope... His map was legit trying to make us turn right onto the off ramp of i-85 North so we can then get on i-85 North.... I had to tell if it was wrong, he didn't believe me until he saw cars about to come directly at him out of the exit we almost turned down,.. from there on out I told them to ignore the directions and just listen to me.

Is the Uber GPS that bad? If we had gotten to an accident who would be liable?