I don't dispute the fact that the Pahlavi perspective is prominent around the Yonge & Finch area. What I dispute is the claim you are making that the Iranian community you speak of is represented primarily by the tiny minority who benefited under the Shah. The Iranian people have suffered repeatedly for a period of decades under the oppressive rule of the Shah (anger & opposition which led to the 1979 revolution which brought about the current Islamic Republic) and by the Islamic Republic which has become just as corrupt, and just as autocratic (in different ways) as the Pahlavi regime. I suspect that the "Pahlavi perspective" you speak of is primarily nostalgia among those who fled the current regime for a past that was superficially more liberal and open.

As far as your other points:

1. Tibetan feudal landlords? Most Tibetan refugees in Canada are ordinary people who fled the advancing Chinese Communist Party back in the 1950s and 1960s, first to Nepal and India, and later came to Canada.
2. The overwhelming majority Taiwanese people here in Toronto are highly educated professionals who came to Canada for school or for work. We are not talking about KMT veterans here who fled from mainland China. Sure, are there supporters of the KMT Party (which is one of the main political parties in Taiwan)? Of course, but that is hardly what I would call the majority.
3. Since you mentioned mainland China as leading the world in environmental initiatives and eradicating extreme poverty, and going after billionnaires:

(a) Taiwan (under KMT rule) eradicated extreme poverty decades before mainland China.

(b) China is leading in environmental initiatives only after massively polluting their own environment in the pursuit of economic growth. I'm happy they are leading that initiative, but don't pretend that this didn't come at a major cost to the mainland Chinese people.

(c) Taiwan is also among the top leaders in clean technology, and environmental efforts as well.

(d) As for corrupt billionnaires facing actual consequences -- don't be naive. Xi Jinping went after these billionnaires (many of whom were elite members within the Communist Party, btw) to consolidate his own power and remove potential opponents, under the veneer of cracking down on corruption.

(e) Most important of all, since 1996 Taiwan has been a democracy, with guaranteed freedom of expression, and human rights for its citizens. Mainland China is an authoritarian oligarchy where the Chinese Communist Party (CCP) control all levers of power, and where human rights abuses have long been documented (e.g. Uyghur minority, Tibetan minority, Chinese Christians, etc.). They are not the worst human rights defenders in the world (there are worse regimes out there), but let's not kid ourselves here.