While most of your complaints is valid for Discord, it doesn't hold for Telegram, which IMO has high quality clients, in terms of native look&feel, lightweight,

While most of your complaints is valid for Discord, it doesn't hold for Telegram, which IMO has high quality clients, in terms of native look&feel, lightweight, and general UX. Matrix on the other hand is like having everything half-baked. This made it an non-option for daily use and I ended up moving to other IMs and a bouncer for IRC.