Even if you opt-out now, there's one thing to consider. There are some websites such as https://alldomainsdb.com/ for e.g. that reap all the whois data available out there and make it in databases, which are later sold for huge money. So opting-out would stop the people from finding you at real time whois checks, but those who have such databases would still have your details as once they were public.
WHOIS domain lookup
in Networks and the Internet
Posted
Even if you opt-out now, there's one thing to consider. There are some websites such as https://alldomainsdb.com/ for e.g. that reap all the whois data available out there and make it in databases, which are later sold for huge money. So opting-out would stop the people from finding you at real time whois checks, but those who have such databases would still have your details as once they were public.