> Deleting an account is not a trivial task, so going through that process over and over for this somewhat minor (and largely inconsequential) benefit would be really difficult to miss — assuming anyone would even bother at all.
> Perhaps if there was more benefit to up-voting a comment, it might warrant additional protections. But this is the kind of hypothetical problem you might want to see demonstrated in actual practice before deeming it a problem at all.