Why the fuck would you use the term alleged or accused rapist when speaking to the victim?
Nothing says I believe you like saying "alleged". I would expect them to use the term when speaking to the alleged rapist but not the victim.
I wouldn't be shocked if I accused someone of something, and the police called them the "suspect" or the "alleged" thief. How do they know? And those labels have major repercussions. They should treat her with respect and compassion, but they owe the accused her/his rights as well.
You really find it gross that sexual assault gets conflated with rape? Gross. I don't think that you mean that and if you do, well that says something about you.
It's not even mildly complicated.
I wouldn't accuse some crazy hillbilly who beat his father with a baseball bat of murder, if he didn't kill him. Why? Because he's not an alleged murderer.
I wouldn't accuse some gross 19 year old Duerson who slept with a 16 year old from his high school of being a pedophile, although what he did was wrong and illegal. Why? Because he's not.
So why should I accuse some slimeball who sexually assaults a woman (which can be things like grabbing her breasts in a bar) with rape? He didn't rape her. It doesn't mean its not despicable. It means its not rape. Rape is much, much worse. Everyone, including the legal system, wholeheartedly agrees.