If that is a serious issue, it says a lot about how goalposts have moved the last decades. We haven't been able to expect anything less than every program being able to read all your files.
I don't necessarily have an issue with the idea that every app I install can read all my files. It's not great, because it forces me to place a lot of trust in every application, but if the alternative is compromising what those apps can do, or bombarding me with security prompts... well, I can see both sides of that argument.
However, if we are going to go down the path of compromising functionality and adding lots of annoying prompts, then that strategy had better actually work!
If despite all of these annoyances apps can still read my browsing history, that means I also still need to trust every application I install, so I'd definitely prefer we just went back to where we started.
On unix systems that still use a 1970s permissions model, this is true, but it's been fixed on mobile devices for ages, and macOS desktops for over a year (this bug notwithstanding).
Ransomware (enabled by bitcoin payments to anonymous recipients) really changed the game on desktop in the last few years. Apple stepped up, but there's crickets on the matter in Windows- and Linux-land, aside from the people who have been containerizing their desktop apps[1].
From early on, Android had strict separation of files across apps. I would think users are generally aware and expecting that apps do not have full access to all of their data.
