I wouldn’t blame my „buyer‘s remorse“. It was just my subjective impression. But if you think about it, 50% thicker glass will probably not have the same clarity, since it will absorb more light from the oled.
I just can't imagine Apple would sacrifice clarity for thicker glass. They would find a way to eliminate the effect by the makeup of the glass or other ways of compensating for it. Anyway, I'll find out myself when my S7 arrives later this month or early next. Any pictures or videos I've seen look normal.