I can accept him, and will interact with him, but I won't do things that put money in his pocket to further advertise his views. Increasing his view counts, either via my watching, or my linking others to watch, does that. I am morally opposed to doing that. It's nothing to do with "the ability to accept or interact" with him; I just won't fund him.
> In my country there used to be a mandatory military service or alternatively a longer civilian service; I choose the latter
I'm sorry that your country condoned slavery. These sorts of policies and laws will eventually be condemned universally by history once they fall out of fashion.