LOL, true enough. But I think there are other people who are wondering the same thing. Plus, the answer might be very different today than it was 5 years ago, given how much iOS and apps have developed in that time.
Indeed. A lot has changed.
If a student asked me about writing a thesis or dissertation on the iPad, I'd give them the thumbs up, but would also mention the caveats.
There was a day, not so long ago, when people wrote by hand (perish the thought!) and asked someone with typing skills to type it up for them. Seriously, it wasn't that long ago. Some of those folks are still teaching in universities today. Technology has changed a lot (thankfully), but the key elements of a great thesis or dissertation remain the same: original ideas, significance, thorough research, strong reasoning, etc. For these, it doesn't matter if you have a pen (Apple Pencil?), typewriter, computer keyboard, or virtual keyboard on the screen.
Anyhow, I wrote a lot of my dissertation on the iPad. It is doable. It simply depends on your situation. The iPad isn't "wrong" or "right" for writing a thesis -- it is a tool, and you have to decide if it fits your project or not.