I like the view of Rabbi Mordechai Aderet. I have never understood this passage of the Bible before. I thought that the behaviour of Jakob was arguable, but on the other hand it was god's will that he will get the blessing.
So is Aderet's explanation a good way to understand the problem. That Jacob got the blessing is right, but that he took it by himself and with a lie was wrong.
The consequence was that Esaus descendence hate Jacobs descendence.
But there is in my oppinion a problem:
According to the bible is the "curse" in this case the hate of Esaus descendence towards Ismaels descendence only on the children who follow the ways of their fathers.
That means in the end, that anti-semitism exists today, because Jews are lying and cheating. If they would be all righteous, there will be no anti-semitism anymore.
I don't know