Seconding simplex. Having a built in way to obfuscate IP is very nice. But its more for privacy extremism and small group chats for people in vulnerable situations, matrix is best for most situations e.g. community and interest groups. I also had some ease with setting up simplex with my grandma, funny enough. Not needing to make an account made it much easier for her.
Hope Lemmy gets a simplexchat field one day!
Webring integration would be very cool so many queer people still use them