This video was posted a month ago even when Apple Intelligence wasnt available at all and in any form https://www.youtube.com/watch?v=TPe8revsg3k . Even present day after it was launched Siri can not do this.
Start-ups and other tech companies are doing the whole fake it before you make it so Apple is too. Some recent examples...Open AI demoed and sold if you sign up you might get access to their version of H.E.R. yet Many months later its nowhere to be found yet surely that juiced their revenue. Does it really exist or it was a fake it before you make it demo? Similarly with Musk bringing out those robots implying they were AI driven yet later we learn they weren't. Isnt this all something called false advertising??