That clears up my concerns and questions about both Silverblue and uBlue. Though it sounded convenient for my use case, I avoided uBlue as I thought it was a random fork that might not be reliable in the long term. I will be testing it to see if it works for me or if I can adapt to it. Thanks a lot!

Would installing Firefox on winget solve OPs problem, assuming they are on Windows?

Where can I follow the development of Fedora, like, how would I find out about the kernel hardenings? Thanks for the reply!

RFP covers a lot more metrics than just the canvas, I don't think it would fallback to FPP. You can test it on Arkenfox's TZP test site to make sure though.

I read about universal-blue but I am not confident about using it, as it is not official and not made by the Fedora developers, but I am also not sure if that matters much.

The security from reproducibility does make sense to me, although what I had in mind was more about the malicious actors not being able to modify the system part.

Thanks a lot for the detailed reply! Lemmy seems to be a lot less judgmental and a lot more helpful than Reddit!