The linked article is also blaming socioeconomic differences on Israel. But by many metrics Israeli Arabs are doing better than Arabs in other Arab countries. E.g. life expectancy for Israeli Arabs is higher than the Arab average, and higher than Jordan or Egypt.
Similarly for income. While Israeli Arabs on average earn 65% that of Jewish Israelis at $2,400 vs $3,750, the average income in Jordan is $865, and Egypt $235.
But differences in socioeconomic status between groups exist in every country.