If I understand it correctly, it's because staying cissed means you basically have to pair a player marked as 'C' with a players marked as 'W'; this is known as "cis-normal".
In the past, NYR have attempted to be cissed by trying Panarin (W) with Zib (C) and Trocheck (C), but despite this appearing to create cis on paper, it didn't result in expected cis-normal outcomes.
Due to Drury's inability to maintain the level of C cis-ness combinations required, Chytil (C) is basically the only option left to try with Panarin while maintaining cis-normal status across the roster.
what the f*** did i just write?