Is there a way to add a display rule to multiple columns at one time instead of having to update each column individually?

Currently, there is no way to add or update a display rule across multiple grid columns simultaneously. Additionally, there is no option to apply a single display rule globally or across all existing columns at once.

This is indeed a valid feature request, and there is already an existing request for this specific option: Display Rules applied to Grid Row. We encourage you to vote on this feature request to stay informed about any progress in this area and to show your support for this option.