AV1 has enough support from enough vendors that it has a very high chance of replacing H.264 as the ubiquitous video codec. The headline is a bit click-baity,

AV1 has enough support from enough vendors that it has a very high chance of replacing H.264 as the ubiquitous video codec. The headline is a bit click-baity, but proposing new web standard "now" means it would be available everywhere in ~5 years.