I actually disagree, at least about huddles. Huddles are a direct response to the low-friction nature of Discord voice channels (and arguably Teamspeak/Mumble/etc before Discord, although nothing else married text and voice channels quite as well before Discord.) It's almost silly how small of a difference there is between starting a huddle and a channel-wide "call" - the only difference is that it doesn't start out by "ringing" for everyone in the channel. But that tiny difference completely shifts the feeling from "this is a formal communication" to "we're all just hanging out and you can join if you want but no pressure."

IMO huddles happened because the pandemic moved so many more people remote that the need for a water-cooler replacement became much more obvious.