Let’s assume it was originally written in FORTRAN. Would you think it was a joke or serious?
The writing is on the wall for C++. They’re a little ahead of the curve, but rewriting in a well-liked modern language will likely benefit the health of the project’s contributor pipeline for years to come. There aren’t a lot of people choosing to learn C++ (or FORTRAN) these days.
Fortran has a modern version that codes are written in today in the scientific world. Heck, I write fortran myself and did so last night now that I realise it.
Do users still exist? Sure. Is it a healthy, thriving ecosystem with a promising future, increasing mindshare, and serious advantages over the alternatives? Not so much.
The following point made me laugh, though:
> Being written in Rust will help fish continue to be perceived as modern and relevant.
Is this tongue-in-cheek or meant seriously?