And web development shouldn't be the center of a Computer Science curriculum. Web development happens to employ many of the concepts one learns about in a Computer Science curriculum such as data structures, algorithms, asynchronous and synchronous communication, and UI interactions.
But, like a machine learning course, or a data science course, which also touch on many concepts which are part of a core Computer Science curriculum, it is not a center because the center of a good Computer Science curriculum is the core concepts through which all other ideas flow (algorithms, data structures, message passing and communication, programming language design, compilers and interpreters, object oriented design, functional programming, etc).
Generally all the rest is (and should be) elective. And most curriculums presumably require electives so students can delve into areas they're interested in applying the aforementioned skills to.
But, like a machine learning course, or a data science course, which also touch on many concepts which are part of a core Computer Science curriculum, it is not a center because the center of a good Computer Science curriculum is the core concepts through which all other ideas flow (algorithms, data structures, message passing and communication, programming language design, compilers and interpreters, object oriented design, functional programming, etc).
Generally all the rest is (and should be) elective. And most curriculums presumably require electives so students can delve into areas they're interested in applying the aforementioned skills to.