The Galaxy Z Flip 3 has been torn down for the first time, revealing its inner workings. While the device can be disassembled and re-assembled, it is not all that repairable. Even the battery is glued down in Samsung's latest foldable.
https://www.notebookcheck.net/The-Samsung-Galaxy-Z-Flip-3-revealed-as-being-not-that-repairable-in-first-teardown-video.556523.0.html
This article is kinda useless... The device is as reparable as the Z Flip 2 - and the fact that the battery is glued down in an 2021 flagship isn't note worthy at all. The only problem with repairing foldables is not being to able to get hands on OEM parts - and even if; they're just too expensive.