I feel like he totally misunderstood the concept of a Palestinian "right of return." They're not asking for a right to return to a future Palestinian state, that isn't a controversial thing, they would obviously be in control of their own immigration policy. They want a right for millions of Palestinians to "return" to Israel.
Israelis view this not only as an unacceptable danger, but as a move that would end Israeli democracy; an instant majority of Muslim voters, many of whom were raised to believe that Israeli civilians should not be allowed to live, would turn Israel into, you know, the rest of the Middle East. Ban alcohol, ban homosexuality, ban apostasy, ban building synagogues or churches, do everything else every other Muslim-majority country does.
This was one of the major sticking points at Camp David. And this guy just totally missed it.
... would it? I'm not sure I see how.