If y'all's agreement with Mozilla allows it, anyway.
Portable Firefox just crashed on me, and when I tried to submit the crash report, it just said "There was an error submitting your crash report." Funny thing is, I'm pretty sure that it always does that. Firefox has crashed on me three, MAYBE four times since I've used it (to where the crash reporter comes up) and I don't remember it ever successfully submitting its crash report.
So if the feature's DOA, we can probably cut it to save space...? Or, is there some reason it's there? Because it certainly doesn't do what it claims, which tells me it either does something else, or is simply useless.