And for those people the current options for Matrix are all very much a work in progress to put it mildly.
It wastes quite a bit of vertical space per message, but it's still somehow hard to see for me which lines were said by which person. Something with relative placement of avatar, nick and message is throwing me off.
(*) Granted, it may be a bit odd that I simply want to disable _all_ matrix features (avatars, replies, displaying images, honoring redactions, large multiline messages/embedded texts, typing notifications, etc.).
And same applies to IRC as well, there are clients that go more in the slack/discord direction (which I also won't touch), but it's great to have options, so everyone can be happy in the end :)
I've been trying Matrix on-and-off, and found it ridiculously complicated to figure out bridging (which is probably Matrix's top selling point, and was important for my communities) on the "official" servers.
If I was starting a new chat channel for a project, I'd use Matrix, not IRC. Matrix is more decentralized than IRC due to federation, and Element offers a user experience that should be familiar and comfortable to users of Slack and Discord.