Except everything that matters is Objective-C and Swift. Android is great dragging devs screaming into modern computing, from Xerox PARC ideas. Apparently you

Except everything that matters is Objective-C and Swift. Android is great dragging devs screaming into modern computing, from Xerox PARC ideas. Apparently you missed the part that Apple has already deprecated POSIX APIs like the usage of sockets for new networking capabilities. Or the plethora of ways classic UNIX doesn't work, which is what happens to everyone that buys Apple as shinny Linux. However the point was about mobile OSes, try to ship apps on the store using only UNIX APIs to see how far you would get on the approval process.