I like zulip a lot, but is it really comparable? IRC is built as a simple open protocol and the clients are tuned towards being able to join multiple servers at

I like zulip a lot, but is it really comparable? IRC is built as a simple open protocol and the clients are tuned towards being able to join multiple servers at once. This is a hard requirement for mass adaptation in for example FOSS communities IMO. There is no way that people will bother logging into the zulip or mattermost instances for the 5-15 different FOSS projects they are interested in. This means either a centralized solution like Discord or something like Matrix which is 100x more complex than IRC.