Feel free to replace made-up with self-inflicted, that might be more correct, fair enough.
I do experience the human aspect, and have 4-5 different chat programs installed, which is not ideal, but it is just simply can’t be expected that everyone uses the same stuff. I just remember to use Telegram with friends X, Y and Signal with W.
We can certainly expect the 4-5 different programs to work with each other though. It's even happened before. For a brief period of time, AIM, MSN, and Yahoo all had some kind of interoperability with each other.
I do experience the human aspect, and have 4-5 different chat programs installed, which is not ideal, but it is just simply can’t be expected that everyone uses the same stuff. I just remember to use Telegram with friends X, Y and Signal with W.