Typing on a touchscreen is much slower than a keyboard.
Add a keyboard to your iPad, congratulations you've now got a laptop with half the features.
Cloud development sucks if you live far away from the datacenter due to latency. Also, if your internet connection goes down then you're unproductive until it comes back.
And it’s not about feature comparison to a laptop, even with a keyboard as MacBook Air M2 is better and cheaper than iPad. But easy content consumption, taking notes, sketching, writing, and many others. It’s just more fun than a heavy laptop. But yes, it’s not for everyone as using it full-time requires a change in personal habits. There’s also not much pro apps, but for now you can produce videos, music, cad designs, web design (figma, adobe, serif), so it’s not so limiting as it was years ago.
Because none of the activities you list afterwards are writing and debugging code, tests, etc.