Yes, but that leaves you with 2 passwords and isn't default. The advantage here is twofold. - Your encryption key is derived from your single Firefox password,

Yes, but that leaves you with 2 passwords and isn't default. The advantage here is twofold. - Your encryption key is derived from your single Firefox password, rather than having 2 passwords. - The ease of use of this system makes it possible to have e2e encryption by default rather than by opt-in.