I am no supporter of the Israeli State's treatment of the Palestinians and believe Palestine should be a free independent country(most likely back to the 67 border with all West bank settlements gone) but.....
Did the Israel suffer when no Arab nation had ties with it? - No
Will it suffer if all Arab nations again cut all ties? - No.
What Qatar and others are doing is a gesture, no more than that, it won't make a difference I'm afraid save to help the Arabs conscience.

"Deaths in the Bible. God - 2,270,365
not including the victims of Noah's flood, Sodom and Gomorrah, or the
many plagues, famines, fiery serpents, etc because no specific numbers
were given. Satan - 10."