Topic on Talk:Granblue Fantasy: Relink
The game uses basic XInput emulation with SteamInput, without it PlayStation controllers do not work at all. If PlayStation controllers require any type of wrapper, including SteamInput, to work it means there is no native support and the row should be set to "false". The only reason it's set to "hackable" at the moment is to make the other PS controllers-related rows visible.
Anyway, i'm pretty sure adaptive triggers via SteamInput is not possible.