iPad is a limited device. But the limits are artificial. The ones set by Apple engineers and Steve Jobs. The ones broken by iOS developers.
Yes, there are a lot of things you can’t do on the iPad. You can’t access the file system or make one app talk to another directly. No sharing between apps. No side by side multitasking either. But for every single thing that the iPad can’t do, there are multiple things it can, rather magnificently.