Even without knowing of these, they seem off. I'm not sure they are a benefit to illustrate actual human reviews, it makes these reviews feel off too, when you're aware of their source.
This might be a very personal thing, but I'd feel better reading reviews with just drawings of faces than this.
But if any part of that review is fabricated or deceptive, then you have done 2 things, you've successfully duped some people, and proven to other people that nothing on your site should be believed. The reviews can only be considered pure fiction.
If you don't want to show someone's real face for privacy or permission reasons, then don't show anything at all, or use some kind of graphic that makes no attempt to appear like a real person.
Same goes for the names. I have no reason to believe these are anyone's real names, and if they're not the reviewers real name, then why put any name at all?
There is no answer to that question that actually holds water. You can't say "because a name is more appealing because it looks more authentic"
If I had to guess, it’s a subtle manipulation with the idea that we more heavily weigh the statements and opinions of those who resemble us or are appealing to us