Remind me again the reason anonymous users are allowed to make edit proposals? <sigh> (this wasn't a serious question and don't expect an actual answer)
@Ramhound A permanent block on anonymous suggested edits has been requested before (several times in fact) on meta.se. However nobody thinks the problem is big enough to do anything about it. There is, however, a mechanism to block the IP address after X rejected edits, but I don't know the value of X.