Option / Button: Collapse all commit files

Would be great to be able to collapse all files by default ( option ) and by button. Currenlty there is only an 'Expand all' button - because it is expand by default, i dont get the purpose of this button. Current state commit page:

The problem is: if you have commits with many files, you cant view this commit ( well technicly you can, but it takes ages or might crash your browser )