just look at north korea. they have a nuclear deterrent but are not handing them out to terrorists. your argument is somewhat flawed. ultimately Israel continues to attack other countries and the west looks the other way, or worse, supports them.
This.
The crux is whether these kind of operation will actually make Israel more secure in the long run or just be self-defeating. Will they actually stop Iran from getting nuclear weapons indefinitely? Probably not, but possibly. Will they stop Iran from being able to conduct drone and bomb attacks inside Israel? Nope. Nothing short of a total invasion of Iran and full blown war could stop the latter. The only way to live in a world where the enemy has its hands on such weapons is to give them reason not to attack you in the first place. North Korea is led by rational enough actors to pursue their own self-interest even if we'll never have a guarantee they won't launch a nuke first or smuggle it to a rogue group or lose control of it. But that's true of us, from the DPRK's perspective. That's the reality we have to live with, because we failed to stop them getting nukes- and had no reasonable means to prevent it. Well, Iran may be in the same boat long term. Except now Israel has shown it will shoot first, that it would sooner wage war on Iran than allow it to achieve its nuclear deterrent. And that's going to leave Iran in a place where a nuclear deterrent isn't enough to live in peace.
If tomorrow Russia launched a fleet of terrorist drone attacks against US targets like Ukraine did to Russia and Israel did to Iran, we'd be pulled into the war and be attacking them in retaliation, possibly starting up WW3. What is left to dissuade Iran from retaliating in kind to Iran? Just Mossad security. Well, no amount of checkpoints and port inspectors can keep the drones from slipping in. I will keep saying it, that's the pandora's box we opened.