That's pretty reductive. Rigorous learning in the punch card era would have involved a lot of programming on paper, which requires you to understand the program you are writing in a more comprehensive way than does trial and error. There's a discipline to that type of work that lends itself more naturally slowing down and to thinking about architecture.

Also, while software engineering changes frequently, I'm not convinced that computer science is changing rapidly. It's expanding, but it's not as if fundamental computer science concepts are being rendered obsolete.