A general note that applies to some comments in this discussion, but to any discussion of Matlab on HN. Yes, Matlab is still used heavily, even for new code, and it will continue to be used for many years into the future. It doesn't really add much to the conversation to generalize from the small sample that is your slice of one industry/your employer/your inner circle of friends to conclude that Matlab is dead. According to Wikipedia[1], Mathworks had revenue of more than $1 billion in 2019.

[1] https://en.wikipedia.org/wiki/MathWorks