My .io (finn.io if you want to look it up) says:

  Owner Addr    : Obfuscated whois Gandi-63-65 boulevard Massena
  Owner Addr    : Obfuscated whois Gandi-Paris
  Owner Addr    : WA
  Owner Addr    : FR

and my full name. Seems obfuscated enough, especially since the name was not remotely validated.

Maybe it's just the service you use? My .io has masked whois.

I am using Namecheap and it masks .io domains using Whoisguard.