I'll be honest I'm don't really think the hashtag was written with that much thought in mind. It seems to be more a reaction to people being told "I don't believe you" when they claim someone has assaulted them. I agree it's unclear, and reading the responses is a mixed bag. #MeToo was more direct and obvious what it was about, however I don't think it's a huge mental jump to realize that "Assume the accused is guilty" isn't a nuanced conclusion and is frankly untenable as a policy.