You miss the point. The rating system prior to the Day 3 change was, afaik, that, in t11, any and every player who got less that 20 mins match time was awarded a 0 rating. These 0 ratings were not recorded in the stats history iirc. Thats the way it was designed.
The change to ratings on Day 3 meant that those playing under 20 mins now get a calculated rating but they are still not recoreded in stats history.
That's the point of the thread.
This could in fact also be having a knock on effect in the League Rankings.