Did Wang Zhiyi ruin her physical condition by pushing herself too hard to win the All England Open?

‌After pushing herself to the absolute limit to try and beat An Se-young at the All England Open, she won the title but completely broke her body, and now she can't even maintain her position as the number two player.
Until last year, she was guaranteed to reach the finals. Excluding An Se-young, she was like a grim reaper to the rest of the players.
But after burning herself out to win the All England Open, she has deteriorated to the point where she can't even make it to the finals properly.
It seems like since she pushed herself too hard to catch An Se-young, her body has broken down, leading to a complete downward trend.
Even now, she is losing 0:1 to Yamaguchi in the Denmark Open semifinals. You could say she has effectively lost her spot as the number two player to Yamaguchi.