There is one advantage of no customer support for you as a customer that I haven't seen mentioned. If there is no customer support, there is no one for a frauds

There is one advantage of no customer support for you as a customer that I haven't seen mentioned. If there is no customer support, there is no one for a fraudster to call and socially engineer, and less people with access to the databases who can easily be bribed. I've seen people cite this as an advantage of using Gmail, for example. I don't think this outweighs the fact that you can't contact anyone in most cases, though.