It's not a willful neglect of systems thinking. Functional programmers have been able to build very large programs made primarily of pure functions that are com

It's not a willful neglect of systems thinking. Functional programmers have been able to build very large programs made primarily of pure functions that are composed together. And it makes it much easier to debug as well, because everything is self-contained and you can easily decompose parts of the program. Same with the effectful code as well, leveraging things like algebraic effects.