Earlier quoted context omitted.
Nobody disputes that. The question is, I believe, if we should enable them and elevate them. Giving Card a platform and indulging him validates his entire personal concept, not just the good parts. It's not only a matter of giving credit, it's about choosing where your content comes from. This person is still alive and relevant and subject to social acceptance. And even with dead people, we are reluctant to cite them…
You know if we practiced the same methodology a long time back, many prominent people may never have gained credence even if they came up with some amazing stuff simply because they were gay. Case in point: Alan Turing.
However, this is not the level I want this considered at. Instead, I invite you to look at what you're comparing here. There is OSC's philosophy of hatred on one side, and Alan Turing's sexuality on the other (which was never about harming anyone and hence could always be considered ethically neutral). You can't meaningfully argue that the two are similar. Yes, they share the trait of being socially unaccepted at the time, but that's also where the similarities end.
I'm not proposing we shun people because their beliefs are unpopular. I'm talking about making a choice not to elevate people who are unethical.