If I remember correctly, having a capable RTOS is much more important, and they can be used in regular processors too [0].

I wonder what's so special about this processor that makes it better than dozens of other hardware platforms (both microprocessors and microcontrollers) on which embedded RTOSes are running and doing just fine.

Also if you have a 64-bit processor, but no 64-bit RTOS, you don't have much.

[0] https://en.wikipedia.org/wiki/Comparison_of_real-time_operat...