>AnyDesk did not respond to questions asking if any customer data was accessed, though the company said in its statement that there is “no evidence that any end-user systems have been affected.”

In my experience, this answer is equivalent to "Yes, customer data was accessed".

If it wasn't, they'd say something like "We have no reason to believe customer data was accessed", instead of trying to shift the focus to whether or not end-user systems were caught up in the blast radius.