Oh hey Direwolf I've contributed some stuff to your mods.
You mean if they lied about just the IDs but not the faces? The paragraph quoted mentions that the verification is done client side, "never leaves your device".
If we admit that they're saying they won't store it, then secretly selling your IDs data behind your back, they have to account for that revenue in their books, put it in their privacy policies or do it illegally, it's weak to whistleblowers, third parties get breached all the time (as well as yourself), and you have to trust the people you're selling this to. It's not credible.
There's similar debates with Whatsapp and their E2E encryption. Read this