Just go through privacy guides. There’s a service or self hosted option for everything iCloud provided.

Email alias for everything. Because it’s when your email address is leaked.

Other than that, get into the routine of deleting every account every few months.

Is that even necessary? Plug-in your iphone every once in a while to your computer to back it up. Every other iCloud service has a privacy guides.org alternative

It’s just a public discord server but half baked. Its attempts to add “privacy” just slow it down and increase resource needs, and so it’s worse off than discord.

Their solution? Don’t turn on encryption for public rooms.

At least simplex is actively trying to solve the large encrypted groups issue.