You don't think Oweh was the only one getting fouled going to the basket, do you?
Everyone got fouled, if you got an open run at the basket, consider yourself very lucky.
Heck, Oweh missed a breakaway layup in the Illinois game on top of several other misses at the rim. He didn't get fouled on that run out.
He hits the lane so hard and fast that the ball has a ton of velocity on it and on top of that, he tries to avoid contact. At his size, he should be trying to finish through contact every time.