It's hard to say with Biden. He certainly doesn't come across as a 'creeper'. Simply someone who is physically affectionate as part of his nature and doesn't quite 'get' boundaries. This is NOT an excuse but perhaps is a reason why he has done things that have made people uncomfortable. That being said, he appears to have acknowledged that he needs to be more aware of this and he has apologized if he has given offense or has made someone uncomfortable. Something that Scrotus, Moore, et all have never done.
My own DH is an affectionate guy. But he's learnt to 'think first, hug later' after it was obvious that an innocent hug make one of our sons' girlfriends uncomfortable.