Yes, there's really no excuse for the top ratings first, and I think in the end they'll suffer for it. I lobbied them eons
ago to change to newest first with most helpful as a sort option - I'd just left GH where they do that, and thought it much fairer. I can't stand them for a bunch of other reasons though.
I feel a little guilty because I did carry on long and loud about how stupid the whole sorting/rating system worked, and I did point out to them on a number of occasions that the best reviewers weren't always the first to submit etc. NOW look what they've gone and done! The old system was bad, but this is silly.
I bet 6 months tops before they redo it - maybe to what was obviously the solution to begin with - to me anyway. Newest first as default sort and helpful only votes. If a review is not helpful, don't vote for it. It would be nice, too, if they had a rating-only option so we could do without all those 1 line reviews where really people just want to give a game the thumbs up or whatever.
All of this I have patiently suggested to them in my most diplomatic way. Oh well, they still answer me, but that's all that can be said for my efforts