As a consequence of making the android and iPhone apps open source, they have been able to create a backend for Proton Drive on rsync beta.

This is cool for things that I have stored on a Linux machine but am I correct in feeling wary of using this from a security standpoint until Proton creates their own API?

I'm comparing this to how Google requires you to authenticate yourself via OAuth for security vs how this is asking you to put in your Proton username and password and 2FA and it gets stored as a token in the config file.

I'm just a layman. Just trying to see if my understanding is correct and if there's other things to think about.

What do you think? Is there anything else to consider? Will you use this rsync backend to Proton for yourself? Am I too skeptical?