The bunker bomb was specifically designed for Fordow

Announced in 2009
https://www.cbsnews.com/news/a-look-at-the-mop-massive-ordnance-penetrator/

Months after public knowledge of Fordow in 2009
https://www.nti.org/education-center/facilities/fordow-fuel-enrichment-plant/

It was always inevitable this would be dropped on Iran, just when. Israel and the military-industrial complex decreed it