Doesn't really matter when pick order > calling it.
I always lose when I get people like this. Such a dumb, non-cooperative way of doing things.
The truth is both are wrong, but I prefer calling it much more than pick-order. ESPECIALLY when first pick wants top/mid. Not to mention is much more beneficial to the team when players get their best roles (of course this is not always possible), and when you go by pick order, the chances of getting people their best roles or roles they would like is far less likely.