Am I the only one ...
... who remembers when almost all main-line aircraft had satellite phones installed in the seat backs? I remember flying Swissair to Heathrow and being diverted to Gatwick because of the Burger King fire in T1. We were able to use the phone to change our rental car booking and advise our friends.
But the airlines took them out. Why? Because they were expensive to use, expensive to carry, and nobody used them. (Not even lawyers)
There are jerks everywhere (present company excluded) and I suppose that from time-to-time one may be disturbed by loud users. However my experience is that these people are loud all the time - not just on the phone.
If I had my choice I'd rather have a loud caller, who will annoy us for a limited amount of time, than a misbehaving child who will never stop.