That’s because I use a TN LED monitor and there is no direct light source shining onto it. The devs most likely have similar setups and don’t have any issues either. On a TFT panel brightness is a much bigger problem. I remember playing Minecraft years ago on a TFT Monitor and I had to turn up the brightness all the way to actually see something at night.
But yeah of course I support your idea. However its implementation is quite unlikely at the moment.
Btw your suggestion is a duplicate: