Except those people are dead. Those who ethnically cleansed Arabs (and Jews) during the nakba are dead. Almost everyone who was ethnicity cleansed is now dead. At a certain point you need to recognize that a new generation has been born into this conflict, and with it, a change in circumstances. Attitudes like yours ignore that Israelis who were born there don't have another home to 'return' to.

That doesn't mean that Palestinians don't have a right to resist occupation, but the circumstances are significantly materially different today then 40 years ago.

Joe Biden is older than the state of Israel and Zionists have continuously committed ethnic cleansing and apartheid since their inception. This is an active and current situation.