F1 is a business and businesses value reputation over full disclosure. Publically saying Ferrari cheated and removing points would have been bad for both Ferrari and F1 so it was never going to happen. The statement is as close as it gets though and probably enough to appease the other teams to a certain extent.
The most embarrassing thing for Ferrari is even when cheating they lost both championships and by a considerable margin
Whatever the cheating was they really should have saved it for 2021 then people would have thought it was clever aero or something.
I'm not sure about the new engine and turbo story. A lot would have probably changed anyway, just like Mercedes has a 'new engine' this year too.
As much as LM10 and I are going to hate saying this, 2020 will be 3rd in the WCC at best. Maybe even 4th as we cannot forget the W10 is on the grid too!!