It is ridiculous how Paramount region locks promotional content. They operate a global streaming service and I am a legit paid subscriber in a non-US market and probably amongst the first to view new episodes due to my timezone. They are very out of touch.
If I didn't have yt premium I would be ad blocking or give up and go elsewhere so I don't know what youtube ads look like. I don't tolerate advertising well. Do they really monetise their channel promotions? I guess that is because Paramount is going broke, and also perhaps part of why they are going broke.