It depends on what you mean by Obsolete.
From my perspective I would say N.
The machine will keep on working.
The old mini appliance was not replaced because it was noi good. It was replaced because AMD stopped supplying the CPU chip and PC Engines could not find any alternative to create a new design so they decided to stop doing the PC Engines stuff.
See the thread
https://community.ipfire.org/t/implication-of-eol-firmware-announcement-for-apu-boards/9316