Taco can still become a productive player on down the road. So far his impact has been minimal given his draft status. I would expect to see glimpses that he will become the player we want him to be.
The OL he was facing last night was bad. He wasn't much of an impact last night that I personally saw. That doesn't mean he can't or won't be an impact player, but he isn't an impact player right NOW.
He was drafted too high to be this much of a project. They appear to be forcing him on the field to justify the pick. I would prefer they play the best players now and continue to develop him in the weight room and practices. That is how players get better anyway.
Tapper should be playing over him. The only reason he isn't is draft position and that's a poor reason to have him playing over anyone.