Your browser clock is not off. LibreWolf, Tor Browser, Mullvad Browser etc. set your browser’s reported timezone to GMT to not reveal which timezone you’re actually in.
And I don’t understand what you’re talking about in the last sentence.
The operating system is not the only way of spying, there is already firmware on your device running without your permission, pretty much impossible to see what code its running, and requires expert level knowledge to disable (or tamper with :)) if a third-party firmware implementation that allows disabling the IME doesn’t support your device.
Most phones today also just have a non-unlockable bootloader with a spyware Android skin installed. Locking something down to this level is not really impossible.
It doesn’t have any containerization between instances. There is an experimental opt-in setting for it but it’s completely broken. It’s just sandboxed because of flatpak.
It doesn’t use any seperate layers of containerization other than flatpak. So if you don’t install it via flatpak, it won’t be sandboxed.
There is also no proper instance containerization (you can enable it in Bottles’s settings, but it’s marked as experimental and I’ve been unable to run a single application with it on), so an app installed on one instance in Bottles will have access to all other instances’ files.
What do you mean? Mastodon.social is extremely critical of Israel. What exactly did you say to get yourself banned?