"We recognize that, in the next four years, our decision may cause us to have an even more difficult time. But we believe that this will give us a chance to recalibrate, and the Democrats will have to consider whether they want our votes or not."
That's gotta be one of the strangest reasonings I've heard in a while.
On the other hand, Biden is probably adding to the already overwhelming percentage of Jews who vote for Democrats. Overall, probably not going to make much of a difference even if some Muslims choose to heed these calls.
In Michigan, 25 percent of the population identity as evangelical Christians and 30 percent of those typically vote for Democrats. They probably wouldn't have been been very happy with an anti-Israel stance. Neither would the Jewish community.
No matter what any president would have done in this situation, they would have won some and lost some.