The Linux terminal app on Android reddits are full of reports of instability. It is far from being useful as far as I understand. I had so much hope for this being a good way to use my phone as a portal for development, but it's a dud. At least we have termux and proot.
Termux itself is a red-headed step-child on Android, with current releases installable only from F-Droid, and quite possibly subject to further restrictions in future.
Mind: Termux is the only thing on Android which has not precisely sucked in my own 15+ years' experience with the platform. It remains both crippled and emperiled by the OS and Google.
My own interests lie more in the ability to run Android emulated under Linux, and switching from phone / tablet devices to a small form-factor laptop (Framework 12 or 13 most likely) for on-the-go computing.