It's fair to observe that there is a whole lot to learn. I'm not sure the extent to which you're disagreeing with me, but I'll submit that if it's not possible

It's fair to observe that there is a whole lot to learn. I'm not sure the extent to which you're disagreeing with me, but I'll submit that if it's not possible to learn it all in 4 years, adding a SE major won't magically make it possible. I doubt any engineer or scientist with a remotely interesting job is in a position where they knew everything they'd ever need coming out of college. In the end, the most important experience you should get out of college is how to teach yourself more stuff later.