Yeah the warnings are there for a reason, it is very new. However, only had to change my docker compose once, and that's it. Otherwise everything has worked flawlessly.
The warning serves to make you aware that it is beta software, and to have 3-2-1 backup solution.
For anyone reading this and getting ideas.... Syncthing is not a backup tool. Please don't use it for backups. the devs have addressed this so many times.
Before you lose your data, please try deleting a single file and see what happens.