Not sure if it's worth replacing such locks. Such cylinders are basically useless.
That said, from a Swiss POW where many entrance doors cylinders are KABA 20 or even KABA STAR (or maybe some KESO for the Zeiss Ikon profile) typical U.S. door cylinders are just cheap toys, especially those integrated in the spherical door knobs.
BTW Those door knobs are something very typically U.S., you won't find here excepted maybe in cheap Italian/Spanish/Portuguese tourist bungalows of for furniture doors. Another oddity are the lateral and the bottom gaps of U.S. toilet doors but that's another topic.
