How would they do that. Iran's nuclear program has been under attack for two decades, they've suffered airstrikes, cybersabotage, assassination of their scientists by Israeli hitmen, they've submitted to an extensive sanctions regime controlling all of their reactors for years upon years without the IAEA finding any misconduct from them, and then when the US terror bombings started they have repeatedly targeted nuclear plants and other infrastructure that could in theory be useful for a nuclear program because that's the entire spurious pretext for this war, which is even mentioned in that post itself. How would anybody who has endured all that go from having a provenly 100% civilian nuclear program to testing a nuke within months during a time of war while their entire energy infrastructure is soaking up the US cruise missile supply? It's not possible.

Also check the source, it's literally one single Iranian MP. Nobody in the actual government, nobody in the military, no nuclear scientist or whatever, just one rando sitting in parliament.