Absolutely, and I remember in the 80s through the early 90s it being the case that this way of writing Fortran just continued for years in e.g. engineering disc

Absolutely, and I remember in the 80s through the early 90s it being the case that this way of writing Fortran just continued for years in e.g. engineering disciplines (my sister was an EE student early 90s) while the rest of the world had moved on from classic BASIC and line # programming, which made Fortran in the real world twice as horrifying. I see programs written in later dialects of Fortran and they look totally fine. But my understanding is that Fortran in the "real world" is a far messier affair.