Agree about 346M users and I myself have a PayPal account, that's a big step for adoption. it's still lacks some features that regular exchanges have but it maybe just the beginning or they can easily establish a partnership (or buy) with some platfrom
It sure does lack features of common spot exchanges, but it has enough to be a sort of Coinbase(not Coinbase Pro) competitor. Basically, quick market buys and market sells in just a few clicks. That feature seemed to be enough for the typical not-super-tech-savvy speculator.