Comment Ada is fine, as is Fortran, for different things (Score 1) 109
First, the Tiobe index is rubbish, mainly counting how many times people ask about a language on social media. It doesn't measure usage popularity.
I've been a developer on both Ada and Fortran compilers, though my Ada experience ended around 1985, while I continue to be involved with Fortran today. I love Ada as a language - I used to say that if you could get an Ada program to compile, it would probably work. Ada also strongly influenced important features in modern Fortran, including modules and submodules. I also spent a week with Ada creator Jean Ichbiah's company Alsys in France, beta testing our compiler.
"Systems programming language" would not be my term for Ada, but as I was responsible for a real-time and embedded system Ada product, I suppose it qualifies. When the DoD dropped its requirement to use Ada, interest in the language fell off a cliff, despite its benefits. Fortran is NOT a systems programming language - it excels at scientific and engineering applications, though in my career I have seen it used for many things outside that scope, including the file system for PRIMOS in the late 70s. Fortran continues to evolve and, in many ways, leads other languages in standardizing parallelism. Fortran 2023 is the current standard, and work on the next revision is in progress.
I'm happy to see a resurgence of Ada but note that it doesn't seem to have much in the way of vendor support, unlike Fortran.