I think there is a misunderstanding here as to what has been going on.
Copts have never confessed over the phone as you are thinking. The Sacrament has always been in person.
Let's start with an example that's common among Eastern Orthodox too: before modern technology (cars), often there would a isolated churches far away from any others. The priest's wife and children could not confess to the only priest in town since he is their husband/father... So they would write a letter to their spiritual father confessing their sins, and he would write back to them with any advice/instructions, and telling them they could receive the absolution... which they would then receive from their husband/father. So the confession is by letter, but the absolution is received in person.
I myself have confessed by email in this way... Something happened and I felt the need to talk to my father of confession immediately... so I emailed him asking for an appointment, and told him the reason in detail. When I sat with him the next day I just said "you know what I did" and started to go into it, but he said "it's ok, I know" talked about it, and absolved me.
The practice talked about is not in any way confessing over the phone or internet, receiving a e-absolution and that's it. In fact it can't be impersonal with that, it only makes any sense in the context of a father of confession with whom you have an ongoing relationship.