When you were writing the review, did you not see the red underline under the words with spelling mistakes? I always see it. If I write Lyft instead of lift, or Uber instead of über, I see it.
Either way, I see you’re a brand name creator, so the good news is your clients aren’t hiring you for your spelling and grammar, but for your ability to create brand names. When you get a bad review, you can reply with your creations.
“I don’t think X, Y, Z, K, are that bad. I think they’re very creative.”
Or you can be apologetic.
“I’m sorry you didn’t like my work, as you are aware, this is a subjective gig, a brainstorming, and results vary.”