Or perhaps you do not understand how Discord is commonly used.
People join dozens of servers. Maybe one for every game they play, every TV show they watch, every podcast they listen to. Everything has a Discord.
Even small Discord servers have many channels. Bigger ones will have dozens or hundreds of channels.
Some servers have millions of users. Most of the servers I'm in have thousands.
Many channels are default for all users in the server.
Not sure what the mathematical average is, but this is certainly common at least, and any alternative that can't handle this is no alternative at all.
Why does their patent title sound like it's an Amazon listing from a company with an alphabet-soup name like BRENGSTAR?