Yes he is. But subjectively I then consider the problems obtaining justice with rape and sexual assault cases, the reality that most rapes don't even result in arrest let alone come to court. We also know that when it comes to influential wealthy white men (with the best legal advice money can buy) the police tread excessively cautiously. They spend a lot of time digging into the alleged victim's history in ways they would not do with victims of most crimes or where the perpetrator is more convictable .
Even with this arrest, he has a very experienced team to pull the victim's case apart, a PR team to accidentally expose them on social media, run the PR cycle. Follow this up with the KC reminding the jury that "one word against the other" doesn't meet the threshold for "beyond reasonable doubt" - a conviction is hard to achieve even with a guilty perpetrator.
So whilst my head knows you are absolutely right and "innocent until proved guilty" the reaction from women that there must be something going on isn't surprising. I doubt a conviction will be achieved whatever he actually did and it will provide fuel to his previous support for anonymity for men accused of sexual assault.
He used to have quite the name as an old fashioned mysoginist right winger with a very dodgy record on homophobic comments then he was reborn as the "brave" man leaving a marriage to find himself in a new role as Stonewall's branch officer in Westminster.