True. Although there are likely 60-70 of them in various flight museums and static displays, none of them are flyable. 150 or so were scrapped and shredded to avoid parts being obtained and sent to Iran to keep their remaining fleet active - and none are in the Arizona boneyard where many other fleets are parked.
Meanwhile, Iran has developed its own programs for modifying, rebuilding and improving its F-14 fleet. While at one time it had only a dozen or so flyable airframes (out of 79 deliveries) it now has around 40. In-house upgrades include improved radar, radios and electronics, and the ability to launch R-73 and Hawk missiles. They have the ability to completely overhaul the aircraft using parts reverse engineered and built in Iran, so after 45 years their fleet is getting better than ever.