Amanero firmware update for “native” DSD, up to DSD512, is on the DAC side, see: Amanero card now supporting DSD native · Issue #12 · lintweaker/xmos-native-dsd · GitHub (2006be10 beta FW works without any glitches on my DAC).
On the ROCK side i think Linux patch is already applied for AMANERO, see: Native DSD on Moon DAC (ROCK) - #2 by noris
So ROCK as an “native DSD” endpoint probably works, i agree.