Scheme and its relatives in the Lisp family is seriously different, genuinely attitude and mind changing, and having it no longer an essential part of the curriculum makes it much, much less likely to be learned or used.
Python is a superb language, but I for one can see the Lisp influence in my programming, and I'm a better programmer for it. I think it's a shame that universities are moving more towards "relevance" and further from "what's actually good for you, and you won't really get a chance to do elsewhere."
And that takes us back to the question of what universities are for, and what the value is they provide. People are saying "Why should I go to university - I can learn this stuff elsewhere!" And for many things that's true. But there are things you simply won't learn elsewhere.
Lisp is one of them. I think losing it is a shame.