My guess would be that it takes time to remove all of the content from Fox. But I have run across stuff from Fox News that when I clicked on the video it says no longer available due to copy right laws. If you start seeing them disappear you will know it is Fox, not youtube. Yeah youtube has been deplatforming channels that lean right, and unfairly, but this is different and would be the result of action initiated by Fox News.
It’s seems crazy that FNC would do this, on the other hand they keep that Rat Shemp on all afternoon.