On paper yes. The problem is that they clutter the UI, they trigger at weird times and they turn out to be less useful that they may appear.

Then there's also people, like me, who just want the browser to browse the web. I don't want link preview (annoying feature), Firefox isn't my PDF viewer, I don't have that many tabs that I need to group them and I don't use AI chatbots.

So having a single button to disable all of these features is pretty great. I still want a Firefox Lite, that just does browsing and allows me to add the few extension I want to whatever feature I believe is missing.