That depends on what sort of conservative viewpoints you're taking about. I see people expressing opinions that I would associate with what I think of as Eisenhower conservatives and they are met with civil discussions. It's when people start in with the post-Nixon bigoted, poor hating, corporate/wealthy bootlicking, regressive "conservative" viewpoints that people are less likely to engage beyond calling them out because there is probably no point to anything else. One obvious exception to this is someone unknowingly stumbling into a post on the tankie triad and saying something with even a whiff of conservatism. That's not going to go well. But it doesn't take long to learn that.