And though this might just be a standard disclaimer, why would I go with a product with some code with this warning
Product or M5StickV device is working perfectly and it's unrelated with code that is still in early testing and just recently released.
On a positive note, it is very small and doesn't look like a standard HW wallet. On the other hand, from the pictures it looks rather cheaply-made. I'm not at all familiar with M5Stack, so I could be wrong. Am I wrong?
Don't look picture but look link and specs, for me ledger wallet looks very cheap especially when you open it and see all the junk that is inside, but M5StickV is similar if not exactly the same device like Blockstream Jade wallet is using.
It can be used for multiple purposes as mini computer and not only as hardware wallet, and it has camera for QR codes, something that trezor or ledger don't have.