It's sort of similar to the Brett Kavanaugh ordeal. Going from memory, the first accuser told her story in private to a Congresswoman in the summer of 2018, I believe it was in July. That politician sat on the information for the rest of July, the entirety of August, and the first few weeks of September. Only when it was closer to the midterm elections and the confirmation process did the Democrats launch their attack against Kavanaugh's character. They urged Congress to delay the vote until after the midterms, which they were hoping to win in a landslide, so that they could deny Kavanaugh a seat.
In either case, we have politically-minded people deliberately timing the release of information. As regular voters, we have to decide what's more important: what the information reveals, or how it is being weaponized.