iOS has come a long way, though. There's a local file system I can access and move files around with. I can run Syncthing on it (with Möbius). I can even run Linux on it (iSH), including a package manager. I can use qpdf to decrypt a PDF I downloaded with Safari, and I can even run Python and compile C code, on the device, with acceptable performance.

It's not the same as a real computer (no daemons or cron jobs), but it can do a lot of the things I want to do when I'm on the go. The only thing I'm missing is running multiple apps side by side, but I guess that's hard on such a tiny screen.