I see several things that concern me
From the FAQ
Uses Monero v0.12.2
From what i can tell we are on v0.18.3.1. Either the FAQ needs updating or this thing is using quite an old monero version.
Spend Moneroj (handle with care on mainnet!)
This needs to be pointed out to be careful?
My storage is getting full
Newly generated wallets are stored in .new in the main wallet folder. They are never erased (for now). You can delete this whole folder from time to time.
Also, the backup folder named "backups" (formerly .backups) is never automatically cleaned up. You may want to do housekeeping manually with a file browser.
All wallet files (testnet and mainnet) are stored in the main Monerujo folder. So be careful erasing stuff. One of the future releases will split the wallets and move testnet wallets out of there.
This just sounds like an accident waiting to happen.
CrAzYpass is awesome - but I don't want it!
Creating a file named .nocrazypass in the wallets folder will disable generation of crazypass for NEW passwords (new wallet or change password). The content of the file is not read and is irrelevant. Wallets with CrAzYpass will continue working normally. The currently set real wallet password can be checked in the "Show Secrets". The wallets folder is:
In 1.x: monerujo on your external storage (legacy) In 2.x: /data/data/com.m2049r.xmrwallet/files/wallets (requires root access)
NB: This feature is for test purposed only - all your XMR will be stolen if you use it!
No idea what this even is but why include something that you explicitly have to point out will get your monero stolen?
Edit: to me this sounds much less like a user wallet and more like a dev wallet.