I know others use Arabis(?) I think thats what it called.

You probably mean Anubis.

+1 for this.

People should stop using these ad and tracking apps disguised as some useful app.

What data? The only thing they know is when the account was created and when was the last access.

You do need a phone number to signup to Signal but you don’t need to share it with anyone. Just create a new username for each new person you want to add.