From a security engineer who has secured highly successful retail Bitcoin infrastructure:
There is NO DEVICE you should EVER trust to supply you entropy. Unless you can read and clearly understand exactly what that code is doing. And you've made damn sure the device in your hand is also fully traceable; with open schematics. I won't get into the obvious supply chain attack vectors; plastic bags aside.
I don't have time for this level of verification; outside of work hours. Nobody stacking sats, while spending time with family, and working in their careers do.
Your critical keys (seeds) must be fully derived and verifiable as truly random, from inside meat-space. No devices in the room either. Zero talking.
Don't trust. Always verify firstly.
PS:
@SeedSigner deserves some attention and love. They also freely give 3D print files for 2048 word pills, named: Entropia. SeedSigner (and CryptoCloaks?) can also sell you a high quality, verifiable, 3D printed Entropia word set.