Linux desktop on Android have been attempted many times with variable success, and it goes way beyond command line, see UserLAnd
It brings all Linux desktop apps to your phone, and all you need is Bluetooth mouse.
Do you need to edit an audio file? Try looking on Play Store, every audio editor has ads and subscription and offers only cropping and equalizer. But what if you need cross-fade? Open your Linux VM - bam! Audacity! All the audio editing tools you can ever need, and ten times more that you’ll never use!
Do you need to make a meme? Go download some shitty meme maker from Play Store, that will only let you add text to ten preset images. Or get a photo editor that has twenty sepia effects but won’t let you combine two images. But a simple sudo apt-get install gimp command in your Linux VM, and you get a pixel-perfect image editor with transparency support, layer support, and a thousand brushes, and you can even plug a graphics tablet into your Android tablet and have stylus pressure making brush strokes of different width, or just use an Android tablet with stylus support, the pressure works there too.
Do you want some more esoteric thing like sqlite3 database viewer? Well, Linux VM is your only choice.
It becomes even more important if you want to buy a cheap Android tablet and ise it as a kiosk for some business. Run the backend server on your Linux VM, run the frontend in the Android web browser, and you don’t need to buy an expensive POS terminal.
More open source games with no ads
OpenTyrian
OpenTTD