I was originally going to ask, "Why is Wray staying silent?" but then I found this source which alludes to more generalized statements which pre-dated the current Qanon "leaks" du jour.
Trump's inner circle "furious" with FBI's Wray for undercutting Biden smear: report - Alternet.org
So even if Wray hasn't commented directly on this matter, his silence is deafening. I would be more inclined to pay attention if Wray were to confirm the allegations made by Ratcliffe. Based on the following nebulous statement from the FBI, it just appears as though they're being double-dog dared into publicly disputing the narrative put forth by the likes of Trump and Ratcliffe:
FOX News | FBI says 'nothing to add' to DNI Ratcliffe assessment on Hunter Biden laptop, emails
Why would you state categorically that Trump's "handpicked FBI director has publicly stated that this is a Russian disinformation campaign" then?