These addresses are randomly generated addresses which you can rotate whenever you want which seems better than giving signal your phone number or payment information

Audio and video calls are available in delta chat :)

Holy shit the astroturfing in this comment section is crazy. If a 9 year old went into any other store and used a company card the store would reasonably refuse to sell 100k worth of goods. If the payment system Google implemented doesn’t even verify who is paying then that’s negligence on their part.