This can be particularly relevant for Bluetooth speakers. As with Wi-Fi connections, it would be great if we could get automatic connection to Bluetooth speakers instead of clicking the Bluetooth icon and then Connect button after every login - perhaps as an option in System Settings > Bluetooth > Configure...
This is up to parts of the bluetooth stack below us. You'll want to contact your distro about how they configure it or what version they ship. Let me guess: Ubuntu 22.04?
(In reply to Nate Graham from comment #1) Sorry for the missing sysinfo: Operating System: KDE neon 5.24 KDE Plasma Version: 5.24.5 KDE Frameworks Version: 5.93.0 Qt Version: 5.15.3