Now, you might think you’re safe as long as you don’t install that plugin. I have news for you: it’s a dependency for the GTK frontend, which Debian 13 installs and enables by default. So even if you never asked for it, it’s already there, quietly doing its thing.
So, if I'm reading this correctly, if you're using X, as opposed to Wayland, then Debian 13 would leak whatever text you select unencrypted over HTTP to chinese servers. So, if your password manager selects the password in X, then your password would leak unencrypted, by default.