The no vote is not necessarily the status quo, if anything a yes vote is. A no result would stop the treaty in its tracks (since all member states must pass it), while a yes result will continue Europe on its way.

If undecided, or uneducated, then perhaps a spoit vote would be better than a vote on either side, because although you mightn’t understand the implications of a yes vote, can you honestly say you also understand the full implications of a no vote?