As a Discord user, I don't really understand this issue. In what way is having a single channel with content on every topic less overwhelming than having specif

As a Discord user, I don't really understand this issue. In what way is having a single channel with content on every topic less overwhelming than having specific channels for individual topics? If I want to read about a specific topic on Discord, I simply go to the channel for that topic. But if there's only a single channel a la IRC, then I would have to search through a whole bunch of conversations about topics irrelevant to me to find what I'm looking for.