That's quite the paternalistic and insulting approach.
We were all "junior" at some point.
I don't find mentoring boring. I find it one of the most engaging and enjoyable aspects of becoming a senior/lead on my team.
However, code reviews can be a mixed bag. Seeing people get overly focused or "clever" with formatting when we have a style guide and an auto formatter. Just use the formatter.
Seeing mid-level engineers blindly enforcing their personal "best practices" where they don't really apply (e.g. debating about what fields should be public/private final/non-final in unit test classes).
Junior engineers completely missing the mark of how to add comments (e.g. adding inane and redundant comments on incredibly obvious code but not a single comment around really complex or important code)