Based on reports from 2013 and USAF claims, which can't be verified. Even if the story were true, Iran's AD posture has improved significantly since the 2010s. The country is flooded with long-wavelength LR EW radars now and has capable ADS close to the border with powerful EO/IIR sensors (e.g. 3rd Khordad). A F-22 or F-35 attempting to enter Iranian airspace would likely be exposed to emissions by these lower band radars from multiple angles. Since "stealth" fighters are not optimized against longer wavelength radars and the fighters wouldn't face most radars from an optimal angle (large country, radars spread all over the place), they won't be invisible to Iran's IADS, as shown in this
open-source model. The point wasn't that "stealth" is "crap" or doesn't play a role but that a F-35 entering Iranian airspace undetected and carrying out strikes on HVTs undisturbed before returning home will only work in Hollywood.