Israeli propagandists often claim that Arabs left "due to their own propaganda", but they never produce any evidence of this propaganda. In any case, it's irrelevant: people always flee from war zones. The Israeli crime was not letting them back, and then confoscating any property they had left.
Hundreds gather in protest at CA GOP convention when Trump is set to speak (Haaretz)
from the article: Ethnic cleansing of Palestinians, or, democratic Israel at work