> All OSes, System utils etc. are still done in C/C++.
first of all, no. plenty of OS are made in other languages. also, the big OS WERE written in C, and only remain so in order to avoid redoing millions of lines of code.
> and then a interface to them are given through wrappers in other languages
again this is only done because the OS is using an outdated language, so people are forced to work with it.
> C is still in the top five in the TIOBE index today
that doesnt matter, this does: