Here you go:Wrong about what. The proof is front of you.
It was not an oversight to deliberatly remove the Old ADS funtionality as that takes some effort and planning. That is obvious to anyone with a bit of intelligence.
As to giving justification, you yourself agreed that they do not need to. So how is it an oversight when they do not need to?
I don't need to prove that. It is blindingly obvious that none of it was an oversight. If they wanted to keep the old ADS they would have built the new mechanics on top of it instead of completely new mechanics. It isn't rocket science. They obviously wanted to get rid, hence the reason for the brand new mechanics.
The oversight was failing to justify the removal. Not removing them (or now putting them back in) is the solution.