The regime was organically declining in popularity. Israel’s war simply rejuvenated the regime’s supporter base without any meaningful gains on the ground. There was minimal impact to the enrichment campaign. And the fact that negotiation was used as a ruse by the Americans is definitely a motivation to pursue enrichment even further.
Not to mention that regional powers are now wary of Israel’s expansionist nature and see nuclear power as the only true deterrent. Think about it: does anyone ever mess around with Pakistan or NK?
This offensive directly led to the Saudi-Pakistan defense pact, with Turkey probably joining soon. I would also wager that both KSA and Turkey are starting or are considering starting their own nuclear weapons programs.