There's also that the fact that computing historically have two models as far as managements goes: a) The mainframe model where users have reduced right and there's a set of administrators that are responsible for choosing programs and configuring them b) and the microprocessor model where it's a tool owned by the user and programs acting on the behalf of the users.

The main issue comes from the mixing of those two models where users own a computer, but vendors keep thinking of them as clients for their services. No longer content to use the network as the boundary, they also want a boundary inside the computer. Discord is not that fundamentally different from IRC, and people usually had no reason to sandbox their IRC clients, but you always have to worry about Discord doing some nefarious updates or abusing its role.