@librewolf is on the Fediverse, y'all.
I haven't switched out my laptop yet but I'm now running IronFox on my phone. That led me to a new supposedly privacy focused Android store app, Accrescent to use instead of F-Droid.
The most secure way to install IronFox is from Accrescent - and this is the installation method we recommend most users use. Accrescent is a new and upcoming, free and open source Android app store - with a focus on privacy & security (See here for a list of some of Accrescent's key features). It's currently used by other privacy and security-focused projects, such as Molly, and recommended for use by GrapheneOS, among other privacy and security-focused projects and researchers.
I can still synch to my Firefox profile with IronFox and it had all the mobile extensions (in their own repository) I expected.