The reviewers responsible have been dealt with. Thanks for bringing this to our attention.
In the future, flag anything you find like this with an "other" flag and ask us to look into the review history for a post. I regularly do that now for spam or vandalism that gets through the system and will take a hard look into the review histories of those approving it.
I know that it's easy to get angry about suggested edits and to believe that the whole system is broken, but remember that the spectacular failures you often see posted on Meta tend to be the worst of the worst. I regularly go back through suggested edit reviews and a significant majority of them clearly did improve the posts. The audits dramatically reduced the number of bad reviewers you see out there, and our tools for hunting down those who evade the audits help to eliminate the worst offenders remaining. However, things could still be improved, and we really do appreciate people pointing out obvious review failures like this.
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