You made a very valid point.I don't wish. I see. I couldn't give less shits if Iran disintegrates or not; or if Syria does, in a personal level. I wish they don't form the pov of Turkish state, but the universe has this bad habit of not obliging my wishes.
Burying your head in the sand.
In 2012, while we had not even made any balance-changing interventions on the ground in Syria, the Assad regime shot down our RF-4E Phantom fighterjet.
This is a milestone for us. That day, I'm sure someone argued in the forums that we did not respond harshly enough to our plane being shot down. That's why we were forced to become a side of this game, even though we were not the ones who started the hostility.
Unless a similar incident occurs in Iran, I do not think Turkey will intervene in Iran.
Beyond that, unlike Syria, Iran is not a state that can be left to its own devices. No civil war can continue for long without outside support. Therefore, countries that will provide external support should be aware that they must also confront China.
This does not deter Iran's enemies from intervening in it. However, it will make the struggle harder. This increases the size of the gamble.
That's why you should consider that China will be included in the whole equation in Iran's internal calculations. As long as China sees Iran as a strategic partner, it will not allow it to fall easily.