It’s not for the end user at this point, it’s for YouTube/streaming companies to spend less on bandwidth at existing resolutions. Even a 5% decrease in size for similar quality could save millions in bandwidth costs over a year for YouTube or Netflix.
Without hardware decoding, it will take more compute to decompress, but sites usually wait to fully roll out new codecs until hardware decoding is more ubiquitous, because of how many people use low-powered streaming sticks and Smart TVs.