Now you are just making stuff up. You bother to make native apps because they will run faster and take better advantage of the hardware. That doesn’t mean that x86 apps can’t run as fast or faster on the M1 than they do on the Intel CPU it replaced.
Roon has said that Roon works “quite well” and “performs excellently” on the M1. See here:
If there were problems found with Roon and the M1, Roon would have come out and said so already. It stretches credulity to suggest there must be problems when none have been found.
Finally, there is no evidence to suggest that Roon Rock running on an Intel NUC is any better than running Roon on the Mac Mini M1. In fact, if you are using DSP, there is no reason to believe the Mac Mini M1 is not more capable by a good margin.