Happy to see this. But personally I prefer to just subscribe it the RSS feeds. Gives me the videos I am interested from whatever platform they are on all in the same place.
I also like to have them be a bit more “durable” than my ActivityPub is right now. There I generally just scan it occasionally and frequently miss things. In my RSS reader I can mark things as read when I am done with them to not miss anything. (and don’t keep seeing the same stuff repeatedly if I keep checking back)