Well yes, but that's true of any degree - heck, that's true of nearly any education. There are a handful of exceptions like medical school that give you access to cadavers that you otherwise wouldn’t have or a robotics lab that has million dollar equipment that you can play around with, but in general you can (theoretically) learn anything by just reading books/practicing. College focuses you on things you might otherwise not come across and, in theory at least, sets a level expectation: anybody with a CS degree ought to understand elementary calculus, for example. If a CS education is “useless” then so is nearly all education.

Many self taught developers will focus on less theoretical skills related to programming and focus on what's practical.

They may read a textbook to teach themselves but it'll be different than the textbooks they make you read for a CS degree.

This typically is a benefit, many fresh CS grades I've seen are not as comfortable developing in their first job as a lot of self taught developers.