Wagner wrote hideous pamphlets against the Jews. He was one bad guy; even his family disliked him. That’s a major problem with his legacy and will always be with him. Sorta like Hanoi Jane - only with talent!
I am very willing to avoid modern artists who hold repugnant views because I don't want to enrich them. Thus, I won't pay to see a Jane Fonda or George Clooney movie. I won't buy certain musicians’ CDs, I won't buy certain writers’ books, etc. That is because I think their current political views are disgusting.
Karl Marx (yes, I know he was of Jewish ancestry) wrote some of the most horrendous anti-Semitic propaganda ever penned, but somehow that hasn’t led the world’s Jews to repudiate Marx or socialism.
Wagner’s wife Cosima (Liszt’s daughter) was more anti-semitic than he was.