Unless you think "most programmers" === "shitty webapp developers", I strongly disagree. Matrices are first class, important components in statistics, data analysis, graphics, video games, scientific computing, simulation, artificial intelligence and so, so much more.
And all of those programmers are either using specialized languages, (suffering problems when they want to turn their program into a shitty web app, for example), or committing crimes against syntax like
To be fair, I do use matrices a reasonable amount in gamedev. And if you're writing your engine from scratch, rather than using something like unity, you will almost certainly need matrices
Even through UE blueprints (assuming the most high level abstraction here) you will come across the need to perform calculations with matrices. While a lot is abstracted away, you still need to know about coordinate spaces, quirks around order of operations, etc.
I don't see why the majority of engineers need to cater to your niche use cases. It's a programming language, you can just make the library if it doesn't exist. Nobody's stopping you.
Plus, plenty of third party projects have been incorporated into the Python standard library.
And all of those programmers are either using specialized languages, (suffering problems when they want to turn their program into a shitty web app, for example), or committing crimes against syntax like
rotation_matrix.matmul(vectorized_cat)