Joseph,
No one will be matir it on the account of the census currently being less by a small amount. As it might be off and it might go up by the next year etc. You can not base it on that only fact. Even the ones that backed the eruv in BP etc did not use that heter alone.
However, what did change is that they verified the validity of Brooklyn (or BP) being surrounded with over 3 Mechitzos Bnei Adam, which according to most poskim renders one as a Reshus haYachid deOraisa and permits an eruv.