Why do you think it's extraordinary?
I know quite a lot of Iranians, and when I talked about this with them about a year ago, their lay of the land given their own opinions and their wider networks opinion is that the majority of Iranians are pro-regime change but NOT at the hands of a US/Israeli intervention.
There are anti-regime segments that are pro-US/Israel intervention, but they think this is a minority and they think most of them are products of foreign intervention.
After Israel bombed Iran last year, there were a few Israeli cells that were uncovered in Iran, so suggesting there is some foreign intervention isn't out of the ordinary.