Litecoin was a fork of codebase not a fork of a chain.

People sometimes need no a reason but a pretext to create a coin fork. After the BTC/BCH split the general concept of chain hard forking was discovered and many pointless forks was created.

I switch between apps from overview or by typing in search, or by sliding between workspaces. It is more convenient to me than classic desktops with a taskbar and minimized windows.