He did accuse. He just phrased it like a question so that he can pretend to keep his hands clean. It’s a standard trope that is followed by right wing media (aka dog whistle) where they can make their accusations/statement in the form of a question so that when called out on it, they can just say “oh i am just asking questions, i don’t know.”
btw Trump does this very often (and fairly obviously), if you look at his speeches, for his more outlandish accusations he will say “You know people are asking XYZ”. This is when even he knows that XYZ is not true but he wants to slander, so he just says “people” and won’t even say which people and why