WHOIS privacy? Porkbun does that for free for all TLDs that support it.
I don’t think I fully understand how what they offer isn’t “ownership by proxy”. I suppose they promise not to release your info if police ask for it? On the other hand, they technically own the domains you register through them, so if they get repossessed (e.g. through legal bankruptcy proceedings), whoever their new owner is, will presumably also own your domains…
I’m probably not seeing something here, but this all sounds sketchy to me.