When doing this, I was always wondering how to name my commits, when I was in a good mood I wrote good and meaningful commit messages, but when it was not the case, I just slap "aaa". In any case, nothing prevents you to use both, syncthing for a more reactive sync and git as a kind of backup.

For "running" files I've rarely found commit messages to be all that useful and instead just like to diff head versus last week or something.

I have a git alias setup called "git autopush" that adds all, commits with a generic "[autopush]" message, and pushes to the upstream remote. I use this for my repos of "running" files like org files etc. I've modified it recently to require a config param to explicitly enable it because I'm afraid of typing it in work repos :)

alias gl='git add *; git commit -am"lazy"; git push'