The guy that cliffed out in Texas was lucky to have his PLB but he was irresponsible in his climb. Hikers do this all the time and are the majority of "climbing rescues".
He should have planned his route better, took some technical gear (even just a rope to lower off of) and maybe backed off instead of proceeded (don't climb what you can't surely downclimb). His PLB made up for his stupidity.
He may be lucky and smart for taking a PLB but that is about it.