I suppose it is possible she tolerates this guy because she thinks he has other good qualities, or she knew him before he went nuts. But I think it is much more likely be a hoax. The fact that the links to him in your article no longer work seems evidence for this. There have been people on the altright who speculated that Taylor Swift was a Nazi, because she is such a perfect embodiment of the blonde blue-eyed beauty. When Swift found out about this, she denied it in no uncertain terms.
As the TikTok link on your page points out, she took a tremendous financial risk to stand up for gay rights. She could have lost her whole audience the way the Dixie Chicks did. it just doesn’t make sense that someone who would make these public stances would also have a Nazi boyfriend.