Honestly my favourite thing about this game is the amount of in-world downtime that's encouraged. Including nights. When playing solo, yes it can be frustrating to be out in the wilderness looking for resources to gather, but of course it is, it's night time, gathering is a day time activity. So you can hunt wildlife instead or take some time to prep for the sunrise, further more, logging off to avoid night-time is not a bad thing either. Time away from the game is healthy, and games expecting 6+ hour sessions in one go (whilst this is possible in embers adrift and with a group can be fun) is a ridiculous demand. At the moment I'm only level 15, I've done some exploring of the meadowlands and of dryfoot and haven't had too much issue with identifying resources or getting lost at night, it is more difficult but it's not futile or impossible. Mostly, however, night time is a good opportunity for me to go sit by an ember ring and do some housework, or cooking and no other MMO I've played has been so eager to give me opportunities to do that.
Embers Adrift is not a race to the finish, Elloa captured this well in her video "Is EMBERS ADRIFT a MMORPG for you? - 5 reasons to play it" describing it as being about "A meaningful journey" and the solar cycle is short enough that it's not difficult to plan for both daylight and nighttime activity, but ultimately to get the most out of night time, play with friends, or run about with a group of strangers so that the effects of the darkness are subdued by the company and engagement instead.
As for the argument to just increase night time brightness beyond it's purpose, whilst I respect the issue here, I don't believe this is an appropriate solution, the exposure adjustment as it is seems like plenty enough to enable resource discovery and diminish the effect of night time, but disabling the darkness entirely negatively impacts design decisions already present in the game relating to atmosphere and collaborative engagement, and could be argued to convey unnecessary advantage to players who opt in to brighter nights, and whilst yes, it would appear as a choice, it would soon move towards an established meta of everyone playing with light nights to maintain parity on resource gathering or levels, which I feel is a competitive nature the Stormhaven team want to avoid encouraging.
If you are desperate for lighter nights however, consider gamma adjustment on your monitor, or adding a third party shader mod like Reshade and tailor nights to your needs, though I'm not sure on the approval of this latter process or the impact it would have on game performance.