Toyota just don't take any chances, and will recall if any problem is found. Unlike other manufacturers who will do everything not to recall a car.
The bull bar mounts on my Prado were recalled, after it was found that a very few examples had cracked when used over great distances driving on corrugations. Mine were fine, never knew there was an issue untill the dealer rang and told me. They could have just replaced the ones that had an issue case by case (sound familiar?), but perception and reputation is everything.
Toyota have the best manufacturing standards in the world, and sell their business practices to every other industry. All build the perception and reputation of Toyota, something that Fredoops says doesn't mean shit lol!