Showstopper in the sense that it may not play natively and require transcoding. While x264 has pretty much universal support, AV1 does not… at least not on some of my devices. I agree that it is a good encoder and the way forward but its not the best when using older devices. My experience has been with Chromecast with Google TV. Looks like google only added AV1 support in their newest Google TV Streamer (late 2024 device).
As if, I, the programmer, will open a ticket for anything. Thats your job tester. Thats jour job PM. Im not putting this fire and I dont care if the company goes under because of it.