I hope the Iranians get a better deal (hopefully without being part of some power game by external nations), because they deserve it.
I do not wish any families living in Iran to go through a "collapse", especially not a violent one.
See? If people reply to my comments with reasonable questions, I reply in a similar tone. When people go in full attack mode, they get worse responses. Which is the tone that HN should favor?
A vaccine has a small risk that it can cause harmful effects to a small subset of the population. The predicted outcome is very positive.
Societal collapse and power vacuums in Iran and neighboring countries have a high risk of resulting in harm to a large population. The risk is very high and it has happened before -- in the same country, even!
Collapse and revolutions, unlike vaccines, are a high risk gamble. They can, for example, result in the Islamic Revolution, ISIS or who knows what.
So I don't think the analogy works at all.
I guess what's leaving you open here to hostile takes is that you're not mentioning other things to hope for instead, so some number are defaulting to interpreting your comments as "the status quo in Iran is fine".