what does matt cutts say about the Google japan domain getting slapped ?

You might have known that Google japan domain got slapped recently because of unwanted promotions.If you do not know what happened you can read it below :

Google slaps google japan domain

So what does matt cutts [he is the head of webspam team at Google ] say about this ? You can know that here :

1. http://twitter.com/mattcutts/status/1200910626