Platner needs to drop out ASAP - these are awful, credible allegations.
Said on the pod after the (also credible) June NYT story that his biggest problem going forward would be credibility. It's now abundantly clear that he just hasn't been honest about his past and can't be trusted as a candidate for office.
Saving grace is that the party can find a replacement by the 27th as long as he drops by the 13th, which I very much assume he will.