Zarostrianism was/is a dualistic religion, not a monotheistic one. Moreover it was mostly based on legend as historians do not even know if its founder was a historical person (no evidence) nor do historians even know when he was born and where. Just estimates and guesses. Most historians say that he was born in Central Asia in the 7th or 6th century BC. Thus after Judaism.
Moreover the oldest recorded monotheistic religion is Hanafism which was practiced in ancient times in the Arab world (Arabia, Mesopotamia and Levant) as a succession of the teachings of Prophet Ibrahim (AS) who was born 2500 BC.
https://en.wikipedia.org/wiki/Abraham_in_Islam
https://en.wikipedia.org/wiki/Hanif
https://en.wikipedia.org/wiki/Abraham
And don't say that the above is a myth as there is much more evidence of Prophet Ibrahim (AS) actually having lived (being a historical person) and we also have his grave and both Jews and Adnani Arabs have traced their ancestry to him for at least 3000 years.
I for instance and my family (and 1000's of other Arab families, clans and tribes) trace our ancestry directly to Prophet Ibrahim (AS) through approximately 160 generations.
Lastly there is nothing called "Wahhabism". Nobody calls himself that nor did Muhammad ibn Abdul-Wahhab al-Tamimi invent any new Islamic teachings. Rather you and other trolls must be referring to the Hanbali madhhab which is 1 of the 4 recognized Sunni madahib.
Using your logic most Iranians are Wilayat al-Faqih Muslims and not Shia Twelvers.
Lastly Arabs do not care if you hate the 500 million Arabs or not. As I said pre-1979 we gave you no thoughts and Iran was one of the last things on our agenda. Our criticism is aimed at your Mullah regime (who ironically either are or claim Arab ancestry mostly) and its actions. It's not us that have a 1400 year old obsession and grudge. Don't forget that.
Surprise, surprise 99,9% of all Arab Sunnis, Shias, Christians, atheists etc. also live peacefully together. This is not a unique thing only found in Iran. For instance there is zero hostility between Saudi Arabian Sunnis (of various sects) and Saudi Arabian Shias (of various sects) and terrorist attacks against Shias in KSA can be counted on 2 fingers since modern-day KSA was founded. Both times committed by ISIS sleeper cells within 2 weeks in 2015. Both times attacks condemned by 95% of all people on social media and in public in very strong terms. In fact in the second attack a Sunni soldier sacrificed his life to prevent the suicide bomber from doing more damage.
That guy is amazing. Complains about Islam having been spread (partially) by the sword but either ignores, is dumb enough to believe or blatantly pretends that the same thing did not occur with every single other religion and ideology throughout history. He probably thinks that Persians conquered non-Persian lands by giving out flowers. Iranians have to be some of the most deluded people in history.