nah I'll just continue to mod my client until the death of it. If discord ever decides to ban mods, then most likely yeah I'll move. Default discord is so fucking bloated and unusable.
As long as you're on discord, privacy is just not a thing. However, there was this 1 plugin i really liked, called File Name Randomizer or something along those lines. It would just rename any image you upload to the platform to someone generic. Other than that, there's the disabled telemetry that some clients come with, but that's the extent of what I know.