I wouldn't necessarily say that the vote of anybody who didn't vote would be wasted, because we don't know why they didn't vote. Were there barriers? Were there challenges that prevented them from getting out to the poll? Did they exercise, maybe, a silent protest by not voting, not knowing that there are alternative methods to contest, decline, return a ballot, or spoil a ballot, if you want to protest? I wouldn't consider them wasted votes.
Maybe “wasted” is the wrong word to refer to votes that didn't go towards electing somebody. Let's just say that, instead of nine million or possibly more votes being wasted, they weren't proportional.