I get the “reducing the brightness on your device” thing, but sometimes we multi-task with our tabs. Like having the forums open in one tab and doing something in another and switching. For example, sometimes when I’m watching a show or something on my computer I will switch back and forth to go on another tab (when it freezes or something), and it would be very time-consuming to change your brightness every time you do this. Another example that is more commonly used is when you are waiting for the time limit to make a new post, sometimes we like to switch to another tab to wait, or another example could be changing your music that you are listening to while posting on the forums. I think trying a night mode would be simpler and more helpful to the users.
I hope you understand what I mean! I have no problem with the brightness of this, but some people have more sensitive eyes. I hope you guys try to make a solution to this problem, you guys are amazing with technology considering how many features this forums has, night mode could be another cool feature you could include