Earlier quoted context omitted.
I'm not totally familiar with the issues here, but from an earlier perusal of the email threads on this, it seems like ASF's concern involves things like git's ability to edit the repository history.
I'm not super familiar with subversion's internals, but couldn't a malicious user edit a subversion repo history?
The reason is that in Git every commit gets its own unique hash so you can't change a commit without creating a new hash. To have this in SVN you have to buy 3rd party tools.