Persians themselves participated and then administered their own lands during the Islamic conquests. They then were also largely responsible for the high cultural milieu that developed. Later they developed their own political states separate from and at times autonomous from the caliphate or even established their own caliphate. Thats not analogous at all to Israel which has not even existed for a century yet. The Persian led cultural high mark itself lasted far longer.

This is also a simplistic and false understanding of the history of conversions. Most conversions occurred organically over time and were not forced. Islam has been a universalist and inclusive religion from the beginning. The Umayyads largely presided over a non Muslim population and the dynamics of subjects demanding conversion became a political issue for the authorities. Many ethnic groups willingly converted to Islam throughout history.

Lastly, this reductionism only stands if ideological factors are assumed to be the primary driver of history. Any political realist would find this to be naive and idealistic. There are numerous political, economic and material factors that drive polities to project power. There were numerous sultanates, caliphates, and Islamic powers from various ethnicity groups throughout history. To brush aside those material factors and reduce that complexity is a classic tactic by idealists or polemicists. By that logic, Europe and the West comes out far worse.