People may cheer the supposed immanent collapse of the Mullah’s regime, but it’s unlikely to be replaced with anything the West would like better.
Back in the late seventies the Iranians were protesting the Shah daily at my university. When he fell and the Ayatollah took over, they reacted like they were in shock. I asked one why they were reacting so hysterically. He said, “We wanted the Shah gone, but we didn’t want this guy!” On further questioning he had some vague idea that everything would be “milk and honey” (his literal phrase) and they would have all the freedoms of Americans but in an Islamic context. His thoughts made no sense.
Every culture frames life in the context they know. The only context Iranians know is either a monarchy or a theocratic state. The monarch would be forced to suppress dissent, which is Iranian’s default condition. Thus he would be bad. A theocracy would suppress dissent because their view is literally the way it must be, as ordained by Allah. Any other thoughts or views are sacrilege. (Give me the monarch as he is likely to be the more reasonable.)
When Khamenei finally dies, the mafia IRGC will take over. They are practically running the country now.
I experienced the same thing. The Iranian students (I had one as a roommate for a semester) also thought themselves as Persian and superior to the “Arabs”.