It doesn't seem fair to the accused to send them to a country with different (in some cases lesser) protection than our own for various rights for their trial. In fact, doing so seems like a direct violation of human rights and thus (in Canada's case) the charter of rights and freedoms.
It's also not necessary. If we want to save on legal costs, we should simply run a single trial in the extraditing country which complies with both countries standards of human rights, proof, evidence, law, and so on.
Even the point of contention is ridiculous. Don't export anything to Iran while we continue to export weapons used to kill thousands and starve millions to Saudi Arabia.
I am not saying that your parent post is correct, only possible.
And millions aren’t starving in Saudi Arabia. Saudi’s Arabia is also ostensibly an ally that doesn’t point potential nuclear weapons at its neighbors. Saudi does have plenty of problems, but the Iran situation is one of a hostile regime threatening the region with nuclear weapons. A regime that actually promotes “death to America” and promotes the total destruction of Israel. The Saudis and the Israelis don’t publicly get along, but they tend to leave each other alone and cooperate under the radar, while Iran is a state sponsor of Hezbollah and pursuing nuclear weapons. A state sponsor of terrorism mixed with nuclear weapons? A pretty dangerous combination. There is no comparison with Saudi Arabia.