Why did someone think it was a good idea to switch to JavaScript?
I think the person who'll get value out of SICP will not have any problem picking up scheme syntax on the fly.
If you study any other related field like math or physics you become accustomed to learning a formal system for the context of a particular problem.
CS students tend to have this weird careerist view where every page just directly help them get a job.
Schools are so desperate to keep up enrollment numbers today that many have capitulated and are giving students what they want instead of what the faculty thinks they need.
If all someone wants is the practical benefits of programming and has no interest in the underlying theory, they shouldn't waste their their time and money on a CS degree. All the practical information is available for free or at very low cost.