Then why are you here? CSSU has the same text in it's description package, CSSU testing especially so. As does anything from Extra-Devel, as the install package (and the wiki) for the repo have the exact same text. (It was copied verbatim from Extras-Devel.)

Reality is that BackupMenu (especially the current version in testing) has been around and stable for quite some time. I've had it on my device for months if not a year by now, and it's saved my but at least once. All it does is insert a small hook so that if you boot with the keyboard open it boots/mounts a rescue image with a few very basic tools. As others have noted, you can do more damage with Xterm by accident then you can with this package.