I work in data science (came in via a maths background) but I agree 1000%. My software engineering is pretty self taught, but I make an effort to follow best coding practices at all times.

That said, I think it goes both ways: people from the sciences tend to be cavalier coders, and people from software background tend to be cavalier about the underlying mathematics.

Seems to me that the solution needs to be a stronger culture of both increased scientific and software engineering rigor.