If it has a five year start and we've seen almost zero hardware shipping that is a pretty bad sign.
IIRC AV1 decoding hardware started shipping within a year of the bitstream being finalized. (Encoding took quite a bit longer but that is pretty reasonable)
Yeah, that's... sparse uptake. A few smart TV SOCs have it, but aside from Intel it seems that none of the major computer or mobile vendors are bothering. AV2 next it is then!
IIRC AV1 decoding hardware started shipping within a year of the bitstream being finalized. (Encoding took quite a bit longer but that is pretty reasonable)