That is correct. Not only we have varying I2S standards, there is no consistency between I2s connectors among manufacturers of DAC / Streamers.
The software/DSP-level DSD-to-PCM conversion was aimed to accommodate compatibility with DACs that do not support DSD decoding on SPDIF or AES/EBU inputs. Typically, software/DSP-level DSD-to-PCM conversion almost always sounds terrible. That’s why Aurender’s transports like N10, N20 SPDIF / AES outputs allows an extremely high quality DSD-to-PCM conversion engine performed by FPGA using thousands of tap filters.
If you don’t prefer DSD to PCM conversion, then please use USB output on any of the Aurender streamers for high resolution files beyond 24bit/192kHz. BTW, N10 is now officially discontinued. You can still find good bargains on used N10’s but the newer N series is much improved over its predecessors.