Making UE5 games moddable, is it worth it?

It seems people are already able to make a wide range of mods for many of the games released on UE5 (eg: Silent Hill 2 Remake, Remnant 2…etc) so is exposing extra things for the modders to take advantage of really worth it? do modders even need them or can they manage fine without them? what exactly can modders NOT do without you going out of your way to let them do it