Game Mode not working with Linux Native games on Steam Deck

Enabling Game Mode seems to conflict with Linux Native installs from GOG.

I did
systemctl --user status gamemoded
to verify if GameMode was running/ready, and it is.
The game runs fine without GameMode, so I'm not looking for help there, but I'm wondering why the Linux Native version crashes with it turned on. Also, wouldn't it be preferred for it to be turned on, since it supposedly optimizes system performance?

This is more for my edification, so I can troubleshoot in the future.

Solution: Game Mode not working with Linux Native games on Steam Deck
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Game Mode not working with Linux Native games on Steam Deck - Heroic Games Launcher