To be fair, I believe people are only fooled because we already do so much CGI to real human celebrities that they're already basically indistinguishable from a well-done virtual creation.

"Normal" humans look far different from celebrities and these CGI creations, but celebrities and these CGI creations look similar because celebrities are already mostly CGI.

I don't think that makes a lot of difference. It is more about identity/persona owned by companies.