Comment by vednig

except in RAM based OS the page size and computation resources reduce significantly as OS is using the same memory to run instead of reading from disk and eating up critical memory area for applications, only thing in between a full crash and OS is the swap storage, macOS and Windows would never be even able to achieve this it is possible only due to Linux/BSD and it's level of optimization.

a better way would be to boot via nvme SSD, ethernet boot has a dependency of network, what if you need to debug when network is down or debug the errors/bugs network itself ?