Linux

Revolt rebranded as Stoat and does have voice chat with discord-style hotseat channels available in beta. I still wouldn't recommend it yet due to client bugs, but it's getting there.

Probably not what GP was referring to, but Discord works totally fine in-browser without a client.

Less potential for vulns, telemetry, regressions, etc.

If you are using PC, Check out Element. It does utilize Matrix, but that gives you the ability to self host if you wish. Voice and video works well enough for me and my friends to stream to the room and was a suitable replacement for Discord.

Why do you think 'don't install this shit on your computer' is a concern?

And I guess if you can't fuck with matrix, idk; fucking do without? Might just be there's no safe easy-for-idiots way to get the thing you want right now. Shit happens.

Today I deleted my Discord account, I was using it in Firefox or Webcord wrapper. I can't imagine installing this type of software on my computer. It's scanning your computer by default to check what programs are you using or what games are you playing and it's properiaty, commercial app.

You never know how the data they collect about you will be used. It's a great tool for censorship, and Discord has good communication with the authorities. Despite this, they still have no problem with violence in the form of groups encouraging teenagers to self-harm, Nazis, and gore or pornographic content of a pedophilic or zoophilic nature. Unfortunately, as a minor, I came across a lot of this type of content there completely by accident. A large, centralized, unencrypted messenger allows for accurate tracking or complete destruction of a user's history. This is important for political oppression, falsification, and evidence gathering.

Most people are too lazy to change anything in their lives, even their messenger, out of concern for their privacy and security. And there are alternatives, but they won't even be able to emerge because of this majority. It's not that all these messengers are free and we all pay dearly for them, but not with our own money. Money is not as valuable as power and the right to one's identity.

If Matrix had as much money as Discord (where there are much better freedom-oriented alternatives to Discord), it would probably allow for the same simplicity as Discord. Unfortunately, ethical activity plays a secondary role for us. It's the same with clothing—it's easier to get clothes that are cheaply made in poor countries by exploiting children than clothes that are made locally with respect for workers' rights.

I am not providing alternatives, because if someone does not understand this and is too lazy to look for them themselves, they should not clutter up spaces where valuable people gather.