[mikekchar]

They probably meant that while voice chat would normally be a reason to stop you from migrating from Discord, in this case it wasn't because the OP doesn't like Discord's voice chat. The rest is privacy concerns. I'm actually with the OP. IRC with Mumble is a pretty nice setup for casual conversations and it's really easy to self host (and takes very little resources). Filesharing is potentially a problem, but there are other services for that.