Clearing all the windows timeline at once is such a hustle and also bugs appear that make timeline item grayed out but doesn't disappear after removal and is still searchable even tho not openable. It would be amazing to have CCleaner buildin function that will delete this windows timeline all at once and also background logs so it prevents such visual bugs.
We have done some initial research on the new Windows timeline and plan to include it in CCleaner at some date in the future. I don't think we've currently reached a tipping point as it's only Microsoft and a few other applications who are using this feature currently.