Yeah, temporarily. I doubt that being out of service for a few days gives enough grounds to sue, even merely due to ToS provisions. And that is indeed irrelevant as it is about being temporarily out of service, not having "lost customer money".
Again they cannot be charged for losing billions of their own money, and there is no way to somehow consider the lost funds as "customers' money". I am all for companies getting sued due to negligence when eg they fail to protect customer data, but this is just between binance and the hackers.