A lot of people say it’s good although personally it hasn’t been a huge improvement for me, I’m guessing there’s certain hardware-software integration in macOS and software optimizations that contributes to the battery life that isn’t happening in Linux. It’s dying less quickly than my HP laptop though. I also tend to not close stuff so that may be a problem.
A ton of communities I’m interested in use Discord so I still use it. I use Armcord/Vencord on Linux and Bunny (not sure if it still exists) on Android.