Call it what it is. Human nature.
Neither is Iran the seat of shia Power and nor is Saudi Arabia seat of Sunni power.
What is politics but human nature?
Shia is a political term.. Shia.. Shian-e-Ali.. nothing do with the fiqh aka rituals or differences in interpretation or prayer.
Sunni is also a political term, nothing to do with Hanafis, hanblis, shafais or the like.
Trying to disguise an actual political issue from its true identities by colluding those identities with religious interpretations and practices is just fooling ourselves. We also add to the divide by actually justifying it as a religious divide rather than a political one.
Iran is a major center of persia power, but routinely uses its influence within the entire population of Muslims who call themselves Shia to further its plain geopolitical and geoeconomic designs.
Why do a large percentage of shia in Pakistan revere Imam Khomeini is their own business but that does have their loyalties influenced. Does that make them traitors? No, as much as any of the pseodo-political religious elements under the influence of khaleejis and the Saud are.
Speaking of my own experience which I will not attempt to “prove” since I decided not to video it as it would be plain rude and indecent... and hence no need to accept it:
I recently attended a Shia funeral including the washing of the dead body.. while the body was in the house of the deceased I saw them put three stones on which was written Abu Bakr,Umar and Usman under the feet of the deceased. Am I to take this as a political or religious statement?
These practices did not just originate from Iran but also the highly divisive rule of people like Asafud daula in Lucknow. Does it create religious divide? Yes, but it was also purely political if one considers power politics based on religion. It is true between Iran and Saudi Arabia as it was between the Sunni-Shia scholars/leadership in Lucknow.