Worst, a large iPod.
The iPad could have been a masterpiece if it ran Mac OS. It has 20 versions out there and still it's just a large iPhone.
If you think an iPad is a large iPhone or a large iPod today, you are either hyperbolic/malicious/cynical or grossly uninformed.
The form factor alone allows for a whole new category of apps, and that’s even without taking into account other hardware differences (such as the Pencil or the M-series chip in Pro models) or the software differences with iPadOS.
I have many grievances with the iPad, but to say it’s just a small iPhone/iPod just tells me - wait for it - you’re using it wrong.
I use mine for flying and that's about it.
It’s a “you problem”, not an “iPad problem”.