Let me expand on my downvote: putting aside the issue of sexual assault entirely, Assange has made enemies of several major intelligence agencies. Leaked documents discuss “the start of an international effort to focus the legal element of national power upon non-state actor Assange, and the human network that supports WikiLeaks”. Assange is indisputably the target of one or more international conspiracies.
He might also be a rapist, but it's intellectually dishonest to dismiss the conspiracy angle offhand.
It's dehumanizing to the victims to dismiss allegations of sexual assault because of a convenient theory that aligns with your politics. While it may be your version of Occam's Razor to assume that this is an internationally-coordinated plot against him, I find it much easier to believe that a person with a lot of public self-regard could be guilty of one of the most common crimes committed by humans: acquaintance rape.
What's really frustrating is watching people conflate Assange with Wikileaks and defend the individual as if he's the organization. It causes people who are skeptical of rapists and cult-of-personality individuals to be made out to be anti-whistleblowers and that's not fair. I think Wikileaks operates best as an anonymous organization and not under the control of a figurehead.
I dismissed no allegations. Let me put this as clearly as possible: Assange is a target of multiple powerful intelligence agencies, all with world-class experience executing dirty tricks. Having the figurehead of Wikileaks charged with an abhorrent crime, guilty or not, is very much in the interest of these groups. Not because Assange matters, but because of the backlash you describe in your second paragraph.
Personally, I think they didn't have to lift a hand. Assange discredited himself, with his own actions. But it's an indisputable fact that Assange is the target of one or more agencies whose job it is to conduct internationally-coordinated plots. If you want to ignore the possibility of foul play that's your choice, but don't pretend that you're standing up for truth and justice by making assumptions.
He might also be a rapist, but it's intellectually dishonest to dismiss the conspiracy angle offhand.