I just wish this wasn't tied to Harry Potter. In my mind all I can think of is how horrible of a person JK Rowling is, but I love the name so much.
I didn't really like Donald even before Trump became president. I do think it's rude to assume that everyone named Donald is a bad person. Marie Antoinette wasn't a good ruler, but people still use the name Marie. I think it should be the same for Donald. Just because of one had person doesn't mean the name is unusable.
He actually spelled it Lyndon, not Linden.