This is a real simple question:
Do you spoof your whois info when registering a domain?
If your answer is yes, are you aware that the registar can literally disable your account and essentially confiscate your domains?
If the registrar has reason to believe that the whois info on a domain may be spoofed, it is not uncommon for them to send a snail mail notice to the address on record, and if it bounces back as undeliverable, there is at least a reasonable chance that your account and domains could go bye bye.
There are many reasons that could trigger this action but more often it results from a complaint of some type being received by the registrar, often these are spam complaints, even if you are not spamming, just having a double opt in mailing list can still result in complaints being logdged.
So while overall, the risk may be low, you spoof your whois info at your own risk.
- Dave -

By spoof do you mean hide your info?
Hi Anthony, no, what I mean is using bogus info regardless of whether you are using private whois
- Dave -