I agree 100 %. I use CCleaner regularly and have for years. Nary an issue. Nary! It goes along with Disk Cleanup as an important maintenance app in my systems ( several ssds). We all recognize there are significant numbers of windows/app temp files and registry entries no longer needed which can be deleted. And really,I see no need to naysay this app in particular. The junk left behind in a working machine , especially in the registry after a windows update, can easily be dealt with, the current iteration offers a registry-save feature and the user can actually examine each entry slated for deletion . Nice.
Of course leaving the temp files and superseded registry entries may never affect a system, junk being , well, junk. But I would never leave it. ( I know, space is cheap). But why is it developers have never cleaned up their act and coded the removal of all orphan entries and temp files ? This coding laziness hasn't changed in a million years.
Long Live CCleaner. lol.