User blog comment:CKANE09/Migration/@comment-38580390-20201019181501

Frankly, it was one of my first thoughts, albeit more so on a joking note, but I soon realized the likely reason for it that has been mentioned here: exactly because they are the ones supervising the whle thing, they must remain in the old system in order to see that everything goes as planned. I do see how it comes off as irony that those who impose the change haven't done it haha, but it makes sense.

Not that I'm personally a huge fan of the change. But there's still logic in them migrating last.