This reminded me of the last time a change similar to this was made and there was a pretty strong unexpected backlash. I’d be in favour of experimenting with the change for a couple days to see how people feel about it, except that the response is sometimes so dramatic when experimental changes like this are suddenly dropped on people… I’m not sure how it could be done more slowly though. I don’t think it would impact me that much and the ways in which it impacts most people would be mostly positive (although definitely very frustrating for many people who’ve seen “agreeing with the expert” as common sense default behaviour).
I do think it would at least be good to have the “Withdraw” option on your own ID be equally as prominent as the “Agree” button on the identifier’s ID.