This is already declined, but someone bountied it anyway. Tempted to add status-extra-crispy-declined... But that's too long.
So, I'll just quote this:
Comment locks make sense for short periods of time. Anything more severe should require the entire post to be locked. In particular locking edits while still allowing voting and commenting falls somewhere between idealistic and sadistic.
If you're gonna still allow voting, you have to allow editing. I'm not wild about the idea of allowing a post to be answered, closed or commented on without the ability to edit it either. What you're really looking for is some sort of edit-suspension that could be applied to an abusive editor, which I'm a little bit sympathetic to but tend to agree is overkill in the vast majority of cases.
If someone is making abusive edits, tell them to stop. If they don't listen, suspend them until such a time as they agree to stop - then unsuspend them. P.S.: just because you don't like an edit doesn't mean it's abuse.
If multiple people are making abusive edits, then take a good hard look at the post being edited: perhaps there's a serious problem with it that folks are trying (and failing) to address. If possible, fix it; if not, lock it until someone else figures out how to fix it.
And let's face it: as funny (and occasionally poignant) as that Regex post is, it's not really a great breeding ground for generally-useful features.