So does you phone still work fine? I understand people being worried about the safety of stuff like this, but no point in irrationally worrying if we have proof that it doesn't really seem to influence anything.

Also: Would I have to reinstall the full ping program after this? Since I have ping proper installed, instead of using the included busybox's limited ping. I think not, since you're just copying one binary over the other, and the ping binary stays the same (because ping is just another binary, overriding the original symlink to the busybox binary, and the installation of this binary doesn't seem like it involves anything other than putting in the busybox binary, I'm pretty sure it'll be fine, but might as well ask.)