The STM32's always supported oversampling of their UARTs, either 16x or 8x depending on baud rate.  The lion kingdom never connected them directly to a radio, so that never saw any use.  Now they're a thing of the past.

Lions always connect radios to PICs, but PICs don't have UART oversampling.  They could do software oversampling with a low baud rate.  It could be a cheap way to get longer range.  Lora in comparison uses a frequency sweeping pulse to get longer range.