Because it supports shitcoins. They do have a Stack Duo wallet which is just BTC and Monero. Stack Duo is somewhat popular among the more open minded Sovereign Bitcoiner types.
Discussion
Yes stack duo is what i was interested in. I like that I can get it with Obtainium. Not easy to find a wallet without the Play Store.
Weird, I hadn't heard of Stack Duo until or was mentioned but when trying to add it to Obtainium it "can't find a suitable release".
https://github.com/cypherstack/stack_duo/releases
try turning on "include prereleases" and it should work