They have been too busy with integrating crypto payments instead of fixing long standing issues or planned features (allow to register without a phone number).

They have been too busy with integrating crypto payments instead of fixing long standing issues or planned features (allow to register without a phone number). But - to Signal's defense - while you can scrape the phone numbers, there is not much you can gain from it, you can only tell that a specific number is a Signal user. And sometimes you can see the username (if the user chooses to not encrypt it).