I do not believe this story.
The bunkerbuster bombs, ONLY produced in the United States, have NOT been cleared for export to Israel.
At this point, outside the use of tactical air to ground nukes (which still might not destroy the facilities and just create radiation no go zones around the bunker complexes), Israel has no capacity to penetrate at least 4 of the larger bunker complexes that the Iranians have constructed for their nuclear warhead program.
You are 100% correct, on all counts.