Reasons not to use the Discord communications system
stallman.org
stallman.org
It's unfortunate that this excludes some users but I think those users end up being a vocal minority. I think the benefit here (conversations without spam) outweighs the cost of privacy. And could one not just get a burner phone or something to satisfy the phone requirement?
Obviously there is a place in the world for FOSS services that preserve privacy or federate so you can manage your privacy effectively, but I think Discord eschews this for user convenience and it ends up being a tradeoff that a lot of people agree with.
(note that I will be experimenting with Matrix bridging and such in the near term future, because I too don't absolutely love Discord. But I can at least say I understand and agree with the tradeoffs and the intentions behind them.)
https://support.discordapp.com/hc/en-us/articles/36000096121...
You can use the web version of discord if you want, which can't collect information like that.