Like Wagner and lots of other artists around that time. Agatha Christie's most famous novel? - Ten Little Niggers. Jean Genet was a convicted criminal. I try to separate the work from the artist, even if it's difficult.
I think it's a valid and important observation, but it's not incumbent on someone bring up T.S. Eliot to offer a disclaimer about it, and you shouldn't write a comment that implies otherwise.
Eliot chose, in 1948, when the Holocaust was common knowledge, to reprint a poem that contains the line:
>On the Rialto once./The rats are underneath the piles. The jew is underneath the lot.
That isn’t a poet following a common zeitgeist, that is a deliberate, provocative act.