Corrupted Zones are a super complicated issue right now for programmers, because the Grindbot itself is protected code, meaning if you wanted to write a bot to do corrupted area's, you would need to write out the entire grindbot yourself, and then add in corrupted zones. This would mean a huge amount of work being repeated over what pushedex has already done.
The best way to handle this would be through a plugin that changes the area when you see one, and farms it, but I have not yet looked into this.