To avoid reviewers just following what's previously been decided, the review UI shouldn't display the pro-forma comments that don't have further input added by previous reviewers suggesting deletion.
It's valuable for a reviewer to see any previous reviews of an edit, especially rejection messages. A previous reviewer might notice something that I didn't notice. For example, when I reject a tag-wiki edit that is seemingly OK until I realize that it's a massive copy-and-paste of another article, I include this info with a link to the article. The next person to review the edit doesn't have to go through the trouble of checking for plagiarism.
Seeing the reason somebody else rejected an edit, especially if they supplied a custom reason, is a huge time-saver. Really, we want to encourage exactly the exact opposite of what you're suggesting. A truly bad edit only needs one set of eyes. The second reject is really just a sanity check for the first, and if the first rejection message can make that easier, that's a good thing.
Your edit makes this even simpler: Seeing one of the pre-formatted rejection reasons is still a good thing. People are far too eager to click the approve button, and seeing that somebody else thinks an edit is bad is still beneficial to reviewers. It should prompt you to stop and scrutinize an edit more thoroughly than you might have otherwise.