Do you have any reason to attribute this to the fact they were F-35s? For comparison, how many jets were lost during "shock and awe"? Israel operates with impunity in Iran all the time, often on the ground. I'm not sure the fact they used F-35s is actually relevant here but if you have a source on that it would be interesting to read. Given the state of Iran it is hard to imagine the same could not be achieved with a last generation aircraft... it would not be surprising if by the time a peer power conflict starts manned aircraft like the F-35 will already be obsolete...