Rapid communication over long distances is flattening regional differences, but that doesn't stop language change. It probably speeds it up instead, because any new trend can reach the entire population much more quickly.
Rapid communication over long distances in time might be able to put a stop to that, e.g. if teens end up interacting more with simulacra of long-dead actors than others of their own age, there could be some weird effects. But I think that's unlikely to happen, since someone is bound to come up with a more popular version that has all the newest slang.
Rapid communication over long distances in time might be able to put a stop to that, e.g. if teens end up interacting more with simulacra of long-dead actors than others of their own age, there could be some weird effects. But I think that's unlikely to happen, since someone is bound to come up with a more popular version that has all the newest slang.