Of course the role of the Chief Electoral Officer is to make sure that the referendum is carried out properly and there is access to the polling process in the referendum. However, there is a line between that and having them promote the referendum campaign, as was done in Ontario. I would be very uncomfortable in that role.
The system where the yes committee and the no committee promote each of the ideas is much preferable, rather than leaving it to the administrator of the election, who can obviously be accused, at one time or another, of taking a position in favour of one option or the other. That is a system I would not like to administer in Quebec.