Since Israel did strike Iran, now in the history books, have to spend more time on this.
Circumstances changed a lot since 2009.
Back then it was a danger that Iran might strike back via her proxies. Today, Hamas is in hiding, Hezbollah got pushed back and decapitated temporarily, and the Houtis attack Israel occasionally anyway.
On the other hand Iran developed serious missile capabilities. This was tested in the past year, on a tit-for-tat basis, a salvo of missiles and drones in return of an assassinated general. Israel defensive capabilities were also tested. And US's and UK's too - if they can (and will) jump in the way.
Back then Syria also posed a threat. Now after Assad was ousted and gone, the country lacking strong central leadership, divided, still bogged in a civil war, not so much. In fact it became an opportunity.
Back then the range of IAF planes and the route they could take looked like a problem. Jordan and Iraq was "friendly" thanks to US if the US wished too. But during the days after the fall of Assad the Israelis destroyed much of Syria's air defense capabilities, so they had a whole country to circle over and refuel their planes to solve the range problem. Jordan could be left out.
Back then Israel didn't have the capacity to harm the nuclear program much. They could destroy facilities on the surface, kill some eggheads and whatnot. But the core of the program was hidden below back then. Today it is more true.
Now here comes the real difference.
The US got involved to do that, Trump initiated II/2's scale down version, to put the dot onto the "i".
In fact it looks like Israel did an elaborate operation with forces on the ground, drone strikes (Spiderweb style I would not be surprised if that were also Israelis) in combination with the air strikes. They had to utilize the agent networks they built in Iran through the decades, to gather intel and paralyze air defense and disrupt the chains of decision making. Tho some of that might be the result of Iran's anti-coup measures.
It seems to me Israel did the heavy lifting from option II/2 and took the Iranian retaliation on the chin.