Even a simple (and very appropriate for a junior/newbie) change like you suggested could invite dozens of comments if the engineers don't know what they're doing.
"Dozens" means "at least 24", so that'd been slightly more than 2 comments per line in my example. Which is an insane amount of comments by any standard imaginable: because long before you reach 1-1 comments-to-code ratio, you'd stop, and write a single "no, all of this is a wholly incorrect approach, complete re-do is needed" comment instead.
You’re right, but some people out there will flex and grandstand in their reviews if they operate adversarially instead of collaboratively, which is what your suggestion would encourage.