Of course, the accused's absence could become a determining factor in relation to the effectiveness of counsel and of counsel's advice, the right to counsel, or another of the rights guaranteed by the Canadian Charter of Rights and Freedoms. In a case like that, there could be an appeal on that basis.
However, virtual appearances can be beneficial in first appearances, when the accused is still in custody and the purpose is simply to set dates for the release hearing, also called the “bail hearing”. It might mean that wait times could be reduced.
It can be beneficial for the accused in some regards, but yes, it can pose problems. It is therefore important to retain the consent requirement.