Look at where it is used. It's still a better choice for HPC and deep numerics work than virtually anything else. Which is really remarkable when you stop to think about it.

Sure you could probably eke out faster code if you're a mentat and really good at C, or know the internals of a C++ compiler very well. But then you have to be good (and find good collaborators), and you pay the toll of dealing with pointers and memory management. I'm pretty sure I could stand up, say, a fast Gentleman's method using Fortran faster than in C++. And I'm certain I can get a large team of numerics guys to do, say, climate simulations faster and better in Fortran than C++.