freedom
Streaming IS Downloading
The way that this issue is framed, even by people who should know  better, is profoundly misleading. These are not "anti-downloading  measures". Viewing data from a remote machine without first downloading  it would be a very neat trick.
 
 It is therefore nonsensical to ask "Is it okay to download this video  without the creator's permission?" in this context. The creator has  given you this permission. The question we should ask is "Is it okay for  the creator (or some intermediary) to take control of my computer in  order to delete some data after I've acquired it perfectly legally?"