This is not the only use of those apps. There are plenty of large channels that are either broadcasting from a central source of a sort of forum sorted by new

This is not the only use of those apps. There are plenty of large channels that are either broadcasting from a central source of a sort of forum sorted by new of people who don't know each other but share some type of interest, specially in countries and regions where those apps are dominant (which I believe is not the case of the US).