Everyone involved in the production is implicated, including the three bogus 'experts' – Paul C Brunson, Charlene Douglas and the late Mel Schilling – who frequently encouraged participants to ignore their own instincts and boundaries, putting pressure on them to have sexual contact with the person they'd been paired with even if they made it plain that they definitely didn't want it.
The show itself encouraged an atmosphere of coercion and duress. It's unsurprising that some participants with both hateful attitudes to women and poor impulse control took that cue and committed acts of sexual violence.
I hope the women who have had these awful experiences sue the production company, CPL, and Channel 4.