Fog of war and nervous humans can lead to very tragic shit like this
And this is where Iran fucked up real bad: They had a chance to clear the fog of war almost completely by closing off their airspace to civilian aircrafts (leaving only their aircrafts and potential hostiles inside it) and they didn't.
Bulldozing the crash site is less of a fuck up and more of a deliberate attempt at destroying or hiding evidences, especially since Iran is claiming that it's "scientifically impossible" that they shot it down.Someone in the Iranian military fucked up and shot down a civilian plane..and then cleared out the site...that's a huge fuck up
I don't think there's any reason to doubt Canada on this one honestly.But I still think it's best to wait for neutral investigations.