Bridge is a dedicated server-side relay mod to allow Discord and Minecraft users to communicate without needing to switch applications.
(All system messages are toggleable in the config file!)
No. Bridge works regardless of mods on the client and is fully server-side. This also means bedrock players (playing through mods like Geyser) will also be able to read/send Discord messages.
Currently, Bridge can be downloaded and ran on all Fabric and NeoForge servers on version 26.1.2 and onwards. Porting to new versions will take time and I have no concrete plans on downgrading to previous version.