I've just noticed that the full text you get on the First Posts review queue includes:
When in doubt, upvote the question and leave a comment to help the user out, or click Skip if you are not sure and want to go to the next item.
Why on earth is it recommending upvoting if in doubt? Surely it should just read;
If in doubt click Skip to go onto the next item.
While removing the text isn't going to stop all robo-reviewers it might stop a few and it will also remove the defence of "I was just doing what it said on the page" from the rest.
The Late Answers text just has short form.