Termux allows the same kind of scripting ability you would expect from a desktop. Termux-api almost rivals tasker in what you can automate with it. I use the "share with termux" function and git pull/push shortcuts more than anything else, and they are both effectively 1 touch functions. The share with termux function allows you to script how termux will respond to shared urls, I have it set up to auto-start yt-dlp and fill in certain formats and details and starts downloading. It was a little bit inconvenient to set up, but I managed without a fullsized keyboard. There's an app called hacker keyboard that makes it easy.
The original script I wrote was initially set up with youtube-dl, the most recent change was to yt-dlp. For a lot of little things, like to SSH/reboot my rpi, wget a link I want to archive/send, small python programs (and yt-dlp), the keyboard is perfectly adequate. I've even converted a couple of audio files to send to a friend on iOS, from opus to mp3 on the phone. Bash alias are really useful, and because the phone isn't also general use, they can be very specific.
Termux also makes the phone into a very powerful network diagnostics and pen testing tool. But even something as basic as ifconfig makes my phone feel as powerful as a computer. https://github.com/may215/awesome-termux-hacking
Chromebooks have the ability to install and run android apps. The lightweight environment afforded by Termux is perfect for them. I do use VIM with my chromebook. I know I can use crostini, and in the past I was running crouton, but I realized I can handle 99% of those things in termux, and I can use VSCODE dev for the remaining 1%. I appreciate how much more flexibility termux gives me.
https://wiki.termux.com/wiki/Termux:API
https://github.com/klausw/hackerskeyboard