It really depends on how heavily they lean on their views, and if their views are troublesome or not. I wouldn't listen to Burzum, for example, because Varg is abhorrent, but right-wing views in general are common in black metal, and I do enjoy some of the bands. I wouldn't deem right-wing views as enough to drop a band, in spite of my objection to the right-wing, but going further into far-right views would be an immediate no, because I'd then be supporting fascists. I'm not entirely sure if I'd support far-left bands either, especially if it was a significant part of them and their music, because there are issues with the far-left as well, though for vastly different reasons.