Does it make sense to major in cybersecurity?

As said in the title, does it make sense? Or it's better to graduate to a specific topic (es. networking, iot, etc.)
It seems that if you get graduated in cybersecurity you have only a little bit of preparation in all csec sides, but nothing in-depht so I think it's pretty useless because at work you won't be an all-knowing employee, but you will work in a specific field, or it isn't?

cybersecurity etc iot major networking nothing preparation topic useless