There's some sort of Western shame about someone not having a fully "adult" marriage with all the proper visible steps: dating/engagement/lovely public ceremony. The Chock and Bates ideal.a double standard that fans are applying to would-be American skaters
Misato and Tim's marriage wasn't swept under the rug, they publicly announced it with smiling faces and holding their marriage certificate, and so people weren't surprised when he got rapid citizenship. Maybe that's the Japanese difference.