[tikhonj]

I think saying that web apps are in "dominant usage" right now is a bit unsubstantiated--there are plenty of jobs that do not involve web apps.

Also, you have to remember that universities are not about preparing you for a career. You do not need 4 years of general education if your only goal is to produce web apps quickly.

Finally, non-trivial web apps--those doing something complicated or needing to scale significantly--do need CS knowledge, and even simple ones doubtlessly benefit from it.