[shipp02]

Zephyr RTOS[1] is an RTOS supported by the Linux foundation. It has similar structures to Linux for device configuration like a device tree and tries to emulate POSIXish APIs. I think some embedded people are put off by this configuration structure.

Notably, Zephyr RTOS is the basis of Nordic Semiconductor's SDK[2]. Nordic is a major manufacturer of cellular and wireless MCUs.

[1]:https://www.zephyrproject.org/ [2]:https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/index...

Edit: GP seems to have a history of posting 1 line hot takes with no elaboration